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Gentoo Linux Security Advisory GLSA 200410-26
Severity: Normal Synopsissocat contains a format string vulnerability that can potentially lead to remote or local execution of arbitrary code with the privileges of the socat process. Backgroundsocat is a multipurpose bidirectional relay, similar to netcat. Affected packages
Descriptionsocat contains a syslog() based format string vulnerablility in the '_msg()' function of 'error.c'. Exploitation of this bug is only possible when socat is run with the '-ly' option, causing it to log messages to syslog. ImpactRemote exploitation is possible when socat is used as a HTTP proxy client and connects to a malicious server. Local privilege escalation can be achieved when socat listens on a UNIX domain socket. Potential execution of arbitrary code with the privileges of the socat process is possible with both local and remote exploitations. WorkaroundDisable logging to syslog by not using the '-ly' option when starting socat. ResolutionAll socat users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">net-misc/socat-1.4.0.3"
References[ 1 ] socat Security Advisory http://www.dest-unreach.org/socat/advisory/socat-adv-1.html AvailabilityThis GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200410-26.xml Concerns?Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. LicenseCopyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/1.0 Gentoo Linux Security Advisory GLSA 200410-24
Severity: Normal SynopsisThe send-pr.sh script, included in the mit-krb5 package, is vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files with the rights of the user running the utility. BackgroundMIT krb5 is the free implementation of the Kerberos network authentication protocol written by the Massachusetts Institute of Technology. Affected packages
DescriptionThe send-pr.sh script creates temporary files in world-writeable directories with predictable names. ImpactA local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When send-pr.sh is called, this would result in the file being overwritten with the rights of the user running the utility, which could be the root user. WorkaroundThere is no known workaround at this time. ResolutionAll MIT krb5 users should upgrade to the latest version:
# emerge sync
# emerge -pv ">=app-crypt/mit-krb5-1.3.4-r1"
# emerge ">=app-crypt/mit-krb5-1.3.4-r1"
References[ 1 ] CAN-2004-0971 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0971 AvailabilityThis GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200410-24.xml Concerns?Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at http://bugs.gentoo.org. LicenseCopyright 2004 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/1.0  
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