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AUSCERT External Security Bulletin Redistribution
ESB-2017.2542.2
curl vulnerabilities
24 October 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: curl
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-1000254 CVE-2017-1000101 CVE-2017-1000100
CVE-2017-7407 CVE-2016-9586
Reference: ESB-2017.1774
ESB-2017.0814
Original Bulletin:
http://www.ubuntu.com/usn/usn-3441-1
Revision History: October 24 2017: USN-3441-1 fixed several vulnerabilities
in curl. This update provides the
corresponding update for Ubuntu 12.04 ESM.
October 11 2017: Initial Release
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USN-3441-2: curl vulnerabilities
Ubuntu Security Notice USN-3441-2
23rd October, 2017
curl vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
Ubuntu 12.04 LTS
Summary
Several security issues were fixed in curl.
Software description
curl - HTTP, HTTPS, and FTP client and client libraries
Details
USN-3441-1 fixed several vulnerabilities in curl. This update
provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
Daniel Stenberg discovered that curl incorrectly handled large floating
point output. A remote attacker could use this issue to cause curl to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2016-9586)
Even Rouault discovered that curl incorrectly handled large file names when
doing TFTP transfers. A remote attacker could use this issue to cause curl
to crash, resulting in a denial of service, or possibly obtain sensitive
memory contents. (CVE-2017-1000100)
Brian Carpenter and Yongji Ouyang discovered that curl incorrectly handled
numerical range globbing. A remote attacker could use this issue to cause
curl to crash, resulting in a denial of service, or possibly obtain
sensitive memory contents. (CVE-2017-1000101)
Max Dymond discovered that curl incorrectly handled FTP PWD responses. A
remote attacker could use this issue to cause curl to crash, resulting in a
denial of service. (CVE-2017-1000254)
Brian Carpenter discovered that curl incorrectly handled IMAP FETCH
response lines. A remote attacker could use this issue to cause curl to
crash, resulting in a denial of service, or possibly execute arbitrary
code.(CVE-2017-1000257)
Brian Carpenter discovered that curl incorrectly handled the --write-out
command line option. A local attacker could possibly use this issue to
obtain sensitive memory contents. (CVE-2017-7407)
Update instructions
The problem can be corrected by updating your system to the following package version:
Ubuntu 12.04 LTS:
libcurl3-nss 7.22.0-3ubuntu4.18
curl 7.22.0-3ubuntu4.18
libcurl3-gnutls 7.22.0-3ubuntu4.18
libcurl3 7.22.0-3ubuntu4.18
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
CVE-2016-9586, CVE-2017-1000100, CVE-2017-1000254, CVE-2017-1000257, CVE-2017-7407
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