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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2003.0247 -- Debian Security Advisory DSA 276-1 New Linux kernel packages (s390) fix local root exploit 04 April 2003 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: kernel Vendor: Debian Operating System: Debian GNU/Linux 3.0 Platform: IBM S/390 Impact: Root Compromise Access Required: Existing Account CVE Names: CAN-2003-0127 Ref: ESB-2003.0181 ESB-2003.0222 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - -------------------------------------------------------------------------- Debian Security Advisory DSA 276-1 security@debian.org http://www.debian.org/security/ Martin Schulze April 3rd, 2003 http://www.debian.org/security/faq - - -------------------------------------------------------------------------- Packages : kernel-patch-2.4.17-s390, kernel-image-2.4.17-s390 Vulnerability : local privilege escalation Problem-Type : local Debian-specific: no CVE Id : CAN-2003-0127 The kernel module loader in Linux 2.2 and Linux 2.4 kernels has a flaw in ptrace. This hole allows local users to obtain root privileges by using ptrace to attach to a child process that is spawned by the kernel. Remote exploitation of this hole is not possible. This advisory only covers kernel packages for the S/390 architecture. Other architectures will be covered by separate advisories. For the stable distribution (woody) this problem has been fixed in the following versions: kernel-patch-2.4.17-s390: version 0.0.20020816-0.woody.1.1 kernel-image-2.4.17-s390: version 2.4.17-2.woody.2.2 The old stable distribution (potato) is not affected by this problem for this architecture since s390 was first released with Debian GNU/Linux 3.0 (woody). For the unstable distribution (sid) this problem will be fixed soon. We recommend that you upgrade your kernel-images packages immediately. Upgrade Instructions - - -------------------- wget url will fetch the file for you dpkg -i file.deb will install the referenced file. If you are using the apt-get package manager, use the line for sources.list as given below: apt-get update will update the internal database apt-get upgrade will install corrected packages You may use an automated update by adding the resources from the footer to the proper configuration. Debian GNU/Linux 3.0 alias woody - - -------------------------------- Source archives: http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-s390/kernel-patch-2.4.17-s390_0.0.20020816-0.woody.1.1.dsc Size/MD5 checksum: 793 797d475344401f5fb9ad14deb88cd9eb http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-s390/kernel-patch-2.4.17-s390_0.0.20020816-0.woody.1.1.diff.gz Size/MD5 checksum: 6640 0fa8c3bc6c33d5fe47200e2e78c895fb http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-s390/kernel-patch-2.4.17-s390_0.0.20020816.orig.tar.gz Size/MD5 checksum: 338001 5979fbe7c3325033536dfd3914e22dbd http://security.debian.org/pool/updates/main/k/kernel-image-2.4.17-s390/kernel-image-2.4.17-s390_2.4.17-2.woody.2.2.dsc Size/MD5 checksum: 766 4ed91ba4468490b1f000f2f50fefcfcd http://security.debian.org/pool/updates/main/k/kernel-image-2.4.17-s390/kernel-image-2.4.17-s390_2.4.17-2.woody.2.2.tar.gz Size/MD5 checksum: 7041 aa4841ee18ad551085aac60b2afd156f Architecture independent components: http://security.debian.org/pool/updates/main/k/kernel-patch-2.4.17-s390/kernel-patch-2.4.17-s390_0.0.20020816-0.woody.1.1_all.deb Size/MD5 checksum: 301464 691bc1a529cb6125bb04ca43d795c139 IBM S/390 architecture: http://security.debian.org/pool/updates/main/k/kernel-image-2.4.17-s390/kernel-headers-2.4.17_2.4.17-2.woody.2.2_s390.deb Size/MD5 checksum: 3316464 5e748d0b8376f80bcbc6f1fea8d73b64 http://security.debian.org/pool/updates/main/k/kernel-image-2.4.17-s390/kernel-image-2.4.17-s390_2.4.17-2.woody.2.2_s390.deb Size/MD5 checksum: 1339368 fa1ff23854a5ae570efec050bc42eb13 These files will probably be moved into the stable distribution on its next revision. - - --------------------------------------------------------------------------------- For apt-get: deb http://security.debian.org/ stable/updates main For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main Mailing list: debian-security-announce@lists.debian.org Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg> - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD4DBQE+jDWqW5ql+IAeqTIRAmNBAJUbKxBtQqttBiqzX50VjbnRjn9aAJ9GBZ1U FNpH9lEXCicHDdlfeU9KZA== =y1AM - -----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. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). 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----- Version: 2.6.3i Charset: noconv Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBPo1TeCh9+71yA2DNAQG6fQP+LNrH4n+67QVG63dgU/RFpstAvFuAp23W bw01tEXir9YWfWxF5gUYUpxxrzOr6nGxXM3uGN+kDiMDlhDGg+LbUY89EI5INakC 6t0f6uqKoTrHDu2OaUyR5Pgws7lvj4tn3XkKEV1DD5MFthwzM+SdheVmc1FDsvJB niOAXo/zyp8= =zQsU -----END PGP SIGNATURE-----