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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2004.0024 -- HEWLETT-PACKARD SECURITY BULLETIN: HPSBUX0310-284 SSRT3622 (rev. 2) Potential Security Vulnerabilities in Apache HTTP Server 09 January 2004 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Apache OpenSSL Publisher: Hewlett-Packard Operating System: HP-UX 11.23 HP-UX 11.22 HP-UX 11.20 HP-UX 11.11 HP-UX 11.04 HP-UX 11.00 Platform: HP9000 Impact: Execute Arbitrary Code/Commands Denial of Service Access Confidential Data Access Required: Remote CVE Names: CAN-2003-0543, CAN-2003-0544, CAN-2003-0545 Ref: AL-2003.18 ESB-2003.0722 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ----------------------------------------------------------------- **REVISED 02** Source: HEWLETT-PACKARD COMPANY SECURITY BULLETIN: HPSBUX0310-284 Originally issued: 01 Oct 2003 Last Revised: 07 Jan 2004 SSRT3622 (rev. 2) Potential Security Vulnerabilities in Apache HTTP Server ----------------------------------------------------------------- NOTICE: There are no restrictions for distribution of this Bulletin provided that it remains complete and intact. The information in the following Security Bulletin should be acted upon as soon as possible. Hewlett-Packard Company will not be liable for any consequences to any customer resulting from customer's failure to fully implement instructions in this Security Bulletin as soon as possible. ----------------------------------------------------------------- PROBLEM: 1. Certain ASN.1 encodings that are rejected as invalid by the parser can trigger a bug in the deallocation of the corresponding data structure, corrupting the stack. This can be used as a denial of service attack. It is currently unknown whether this can be exploited to run malicious code. This issue does not affect OpenSSL 0.9.6. More details are available at: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0545 2. Unusual ASN.1 tag values can cause an out of bounds read under certain circumstances, resulting in a denial of service vulnerability. More details are available at: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0543 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0544 3. A malformed public key in a certificate will crash the verify code if it is set to ignore public key decoding errors. Exploitation of an affected application would result in a denial of service vulnerability. 4. Due to an error in the SSL/TLS protocol handling, a server will parse a client certificate when one is not specifically requested. **REVISED 02** IMPACT: Potential Denial of Service, remote execution of ---> arbitrary code and disclosure of sensitive information. **REVISED 02** PLATFORM: HP9000 Servers running HP-UX release B.11.00, B.11.04, ---> B.11.11, B.11.20, B.11.22, and B.11.23 with versions of the following products are affected, and represented as: product-name, version (product-tag/bundle-tag) - hp apache-based web server, 2.0.43.04 or earlier (HPApache/B9416AA) This product includes OpenSSL 0.9.6b. - hp-ux apache-based web server, v.1.0.06.02 or earlier (hpuxwsAPACHE/hpuxwsApache) This product includes OpenSSL 0.9.6i. - hp apache-based web server, 2.0.43.04 (with IPv6 support), or earlier (HPApache/B9416BA) This product includes OpenSSL 0.9.6b. - hp-ux apache-based web server(with IPv6 support), v.1.0.07.01 or earlier (hpuxwsAPACHE/hpuxwsApache) This product includes OpenSSL 0.9.6i. **REVISED 02** SOLUTION: For HP-UX releases B.11.00, B.11.11, B.11.20, B.11.22, and B.11.23 download new HP Apache product from <http://software.hp.com>. ---> For HP-UX release B.11.04, download new patches for ---> systems with Virtualvault A.04.50, A.04.60, or A.04.70 ---> installed. For HPApache/B9416AA, HPApache/B9416BA and hpuxwsAPACHE/hpuxwsApache download the following: - hp-ux apache-based web server (with IPv4) A.1.0.08.01 or later (hpuxwsAPACHE/hpuxwsApache) This product includes OpenSSL 0.9.7b + patches. - hp-ux apache-based web server(with IPv6 support), B.1.0.08.01 or later (hpuxwsAPACHE/hpuxwsApache) This product includes OpenSSL 0.9.7b + patches. ---> Virtualvault 4.5: ---> PHSS_29892 s700_800 11.04 Virtualvault 4.5 IWS update ---> PHSS_29690 s700_800 11.04 Virtualvault 4.5 OWS update ---> Virtualvault 4.6: ---> PHSS_29893 s700_800 11.04 Virtualvault 4.6 IWS update ---> PHSS_29691 s700_800 11.04 Virtualvault 4.6 OWS update ---> PHSS_29891 s700_800 11.04 Virtualvault 4.6 TGP update ---> Virtualvault 4.7: ---> PHSS_30055 s700_800 11.04 Virtualvault 4.7 IWS update ---> PHSS_30056 s700_800 11.04 Virtualvault 4.7 OWS update ---> PHSS_30057 s700_800 11.04 Virtualvault 4.7 TGP update ---> Webproxy 2.0: ---> PHSS_29894 s700_800 11.04 Webproxy server 2.0 update ---> Webproxy 2.1: ---> PHSS_30058 s700_800 11.04 Webproxy server 2.1 update **REVISED 02** MANUAL ACTIONS: Yes - Update Install the product containing the fix. For customers with HPApache/B9416AA HPApache/B9416BA installed, the fix requires removing the affected products from the system and migration to hpuxwsAPACHE/hpuxwsApache. NOTE: For customers with VirtualVault installations there ---> are NO manual actions needed, aside from installing ---> the patches. **REVISED 02** AVAILABILITY: Complete product bundles are available from <http://software.hp.com> for non-VirtualVault systems. ---> For VirtualVault installations, retrieve patches ---> from <itrc.hp.com>. **REVISED 02** CHANGE SUMMARY: Rev.01 temporary ftp site removed ---> Rev.02 HP-UX B.11.04 (VVOS) patches added. ----------------------------------------------------------------- **REVISED 02** A. Background An SSL/TLS testing suite developed by the NISCC (National Infrastructure Security Co-Ordination Centre in the UK) has identified ASN.1 parsing vulnerabilities in OpenSSL. The Common Vulnerabilities and Exposures project <http://cve.mitre.org/> has identified potential vulnerabilities in the Apache HTTP Server (CAN-2003-0543, CAN-2003-0544). AFFECTED VERSIONS ================= ---> The following is a list by HP-UX revision of ---> affected filesets or patches and fix information. ---> To determine if a system has an affected version, ---> search the output of "swlist -a revision -l fileset" ---> for an affected fileset or patch, then determine if ---> a fixed revision or applicable patch is installed. For IPv4: HP-UX B.11.00 HP-UX B.11.11 HP-UX B.11.22 ============= HPApache.APACHE2 hpuxwsAPACHE.APACHE2 fix: revision A.1.0.08.01 or subsequent ---> HP-UX B.11.04 VirtualVault 4.5 ---> ============================== ---> VaultWS.WS-CORE ---> VaultTS.VV-IWS ---> VaultTS.VV-CORE-CMN ---> fix: install PHSS_29892, PHSS_29690 or subsequent ---> HP-UX B.11.04 VirtualVault 4.6 ---> ============================== ---> VaultWS.WS-CORE ---> VaultTS.VV-IWS ---> VaultTS.VV-CORE-CMN ---> fix: install PHSS_29893, PHSS_29691, PHSS_29891 ---> or subsequent. ---> HP-UX B.11.04 Virtualvault 4.7 ---> ============================== ---> fix: install PHSS_30055, PHSS_30056, PHSS_30057 ---> or subsequent. ---> HP-UX B.11.04 Webproxy 2.0 ---> ========================== ---> HP_Webproxy.HPWEB-PX-CORE ---> fix: install PHSS_29894 or subsequent ---> HP-UX B.11.04 Webproxy 2.1 ---> ========================== ---> HP_Webproxy.HPWEB-PX-CORE ---> fix: install PHSS_30058 or subsequent For IPv6: HP-UX B.11.11 HP-UX B.11.23 ============= HPApache.APACHE2 hpuxwsAPACHE.APACHE2 fix: revision B.1.0.08.01 or subsequent END AFFECTED VERSIONS ---> NOTE: HP-UX B.11.04 does not support IPv6. ---> Additional references for vulnerabilities: ---> * CERT/CC Vulnerability Note VU#935264 - ---> <http://www.kb.cert.org/vuls/id/935264> ---> * CERT/CC Vulnerability Note VU#255484 - ---> <http://www.kb.cert.org/vuls/id/255484> ---> * CERT/CC Vulnerability Note VU#380864 - ---> <http://www.kb.cert.org/vuls/id/255484> ---> * CERT/CC Vulnerability Note VU#686224 - ---> <http://www.kb.cert.org/vuls/id/686224> ---> * CERT/CC Vulnerability Note VU#732952 - ---> <http://www.kb.cert.org/vuls/id/732952> ---> * CERT/CC Vulnerability Note VU#104280 - ---> <http://www.kb.cert.org/vuls/id/104280> ---> * OpenSSL Security Advisory [30 September 2003] - ---> <http://www.openssl.org/news/secadv_20030930.txt> **REVISED 02** B. Recommended solution For customers using HPApache/B9416BA and hpuxwsAPACHE/ hpuxwsApache, HP has incorporated OpenSSL 0.9.7b + patches in the following product: - hp-ux apache-based web server version 1.0.08.01 or later <http://www.software.hp.com/portal/swdepot/ displayProductInfo.do?productNumber=HPUXWSATW100901 ================================================== To fix the problem: 1. Determine the affected version. Check for Apache Installation ----------------------------- To determine if the Apache web server from HP is installed on your system, use Software Distributor's swlist command. All three versions products may co-exist on a single system. For example, the results of the command swlist -l product | grep -i apache might show: HPApache 2.0.39.01.02 HP Apache-based Web Server hpuxwsAPACHE A.1.0.05.01 HP-UX Apache-based Web Server Stop Apache ----------------------------- Before updating, make sure to stop any previous Apache binary. Otherwise, the previous binary will continue running, preventing the new one from starting, although the installation would be successful. After determining which Apache is installed, stop Apache with the following commands: for HPApache: /opt/hpapache2/bin/apachectl stop for hpuxwsAPACHE: /opt/hpws/apache/bin/apachectl stop Download and Install Apache ----------------------------- - Download Apache from <http://software.hp.com> (see above). - Use SD to swinstall the depot. - For customers with HPApache/B9416BA installed, migrate to hpuxwsAPACHE/hpuxwsApache and remove the affected products from the system. Installation of this new version of HP Apache over an existing HP Apache installation is supported, while installation over a non-HP Apache is NOT supported. Removing Apache Installation ---------------------------- If you rather remove Apache from your system than install a newer version to resolve the security problem, use both Software Distributor's "swremove" command and also "rm -rf" the home location as specified in the rc.config.d file "HOME" variables. To find the files containing HOME variables in the /etc/rc.config.d directory: %ls /etc/rc.config.d | grep apache hpapache2conf hpws_apacheconf ---> For customers with HP-UX release B.11.04 (VVOS), stop Apache ---> (as above), and install the patches that upgrade the OpenSSL ---> versions to 0.9.7c. These fixes are available in the ---> following patches: ---> Virtualvault 4.5: ---> PHSS_29892 B.11.04 Virtualvault 4.5 IWS update ---> PHSS_29690 B.11.04 Virtualvault 4.5 OWS update ---> Virtualvault 4.6: ---> PHSS_29893 B.11.04 Virtualvault 4.6 IWS update ---> PHSS_29691 B.11.04 Virtualvault 4.6 OWS update ---> PHSS_29891 B.11.04 Virtualvault 4.6 TGP update ---> Virtualvault 4.7: ---> PHSS_30055 B.11.04 Virtualvault 4.7 IWS update ---> PHSS_30056 B.11.04 Virtualvault 4.7 OWS update ---> PHSS_30057 B.11.04 Virtualvault 4.7 TGP update ---> Webproxy 2.0: ---> PHSS_29894 B.11.04 Webproxy server 2.0 update ---> Webproxy 2.1 ---> PHSS_30058 B.11.04 Webproxy server 2.1 update C. To subscribe to automatically receive future NEW HP Security Bulletins from the HP IT Resource Center via electronic mail, do the following: Use your browser to get to the HP IT Resource Center page at: http://itrc.hp.com Use the 'Login' tab at the left side of the screen to login using your ID and password. Use your existing login or the "Register" button at the left to create a login, in order to gain access to many areas of the ITRC. Remember to save the User ID assigned to you, and your password. In the left most frame select "Maintenance and Support". Under the "Notifications" section (near the bottom of the page), select "Support Information Digests". To -subscribe- to future HP Security Bulletins or other Technical Digests, click the check box (in the left column) for the appropriate digest and then click the "Update Subscriptions" button at the bottom of the page. or To -review- bulletins already released, select the link (in the middle column) for the appropriate digest. NOTE: Using your itrc account security bulletins can be found here: http://itrc.hp.com/cki/bin/doc.pl/screen=ckiSecurityBulletin To -gain access- to the Security Patch Matrix, select the link for "The Security Bulletins Archive". (near the bottom of the page) Once in the archive the third link is to the current Security Patch Matrix. Updated daily, this matrix categorizes security patches by platform/OS release, and by bulletin topic. Security Patch Check completely automates the process of reviewing the patch matrix for 11.XX systems. Please note that installing the patches listed in the Security Patch Matrix will completely implement a security bulletin _only_ if the MANUAL ACTIONS field specifies "No." The Security Patch Check tool can verify that a security bulletin has been implemented on HP-UX 11.XX systems providing that the fix is completely implemented in a patch with no manual actions required. The Security Patch Check tool cannot verify fixes implemented via a product upgrade. For information on the Security Patch Check tool, see: http://www.software.hp.com/cgi-bin/swdepot_parser.cgi/cgi/ displayProductInfo.pl?productNumber=B6834AA The security patch matrix is also available via anonymous ftp: ftp://ftp.itrc.hp.com/export/patches/hp-ux_patch_matrix/ On the "Support Information Digest Main" page: click on the "HP Security Bulletin Archive". The PGP key used to sign this bulletin is available from several PGP Public Key servers. The key identification information is: 2D2A7D59 HP Security Response Team (Security Bulletin signing only) <security-alert@hp.com> Fingerprint = 6002 6019 BFC1 BC62 F079 862E E01F 3AFC 2D2A 7D59 If you have problems locating the key please write to security-alert@hp.com. Please note that this key is for signing bulletins only and is not the key returned by sending 'get key' to security-alert@hp.com. D. To report new security vulnerabilities, send email to security-alert@hp.com Please encrypt any exploit information using the security-alert PGP key, available from your local key server, or by sending a message with a -subject- (not body) of 'get key' (no quotes) to security-alert@hp.com. ----------------------------------------------------------------- (c)Copyright 2003-2004 Hewlett-Packard Company Hewlett-Packard Company shall not be liable for technical or editorial errors or omissions contained herein. The information in this document is subject to change without notice. Hewlett-Packard Company and the names of HP products referenced herein are trademarks and/or service marks of Hewlett-Packard Company. Other product and company names mentioned herein may be trademarks and/or service marks of their respective owners. ________________________________________________________________ - - -- - -----BEGIN PGP SIGNATURE----- Version: PGP 8.0 iQA/AwUBP/y3/OAfOvwtKn1ZEQJ0kwCg3Okfw7wg8XkYQ/3UJBOLTtNzlaQAn3Pj yfsl6Rs7qNXsCgCtw/bQW0/p =wTAo - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. This security bulletin is provided as a service to AusCERT's members. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBP/37ESh9+71yA2DNAQGW6gQAjYL5H7UBCa9KGcPZ7BgZcuLmsvISwNDY kH62zgsZprrdTxRKW3R5BsPoYuGK8cZjN08dgHraS1X52wAZHPW2YvmsnMXGgs50 vkdowwurTnKYljM/U3/pJR75ACW+r8Q5Pwa+SeJ6ksanZ29t362eZWq+dgm4Xagm eFh9qiA4P3A= =iD1V -----END PGP SIGNATURE-----