Detections
Analytics
RHEL 6 : glibc (RHSA-2010:0872)
high Nessus Plugin ID 50640
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Synopsis
The remote Red Hat host is missing one or more security updates.Description
Updated glibc packages that fix two security issues and two bugs are now available for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having important security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
The glibc packages contain the standard C libraries used by multiple programs on the system. These packages contain the standard C and the standard math libraries. Without these two libraries, a Linux system cannot function properly.
It was discovered that the glibc dynamic linker/loader did not handle the $ORIGIN dynamic string token set in the LD_AUDIT environment variable securely. A local attacker with write access to a file system containing setuid or setgid binaries could use this flaw to escalate their privileges. (CVE-2010-3847)
It was discovered that the glibc dynamic linker/loader did not perform sufficient safety checks when loading dynamic shared objects (DSOs) to provide callbacks for its auditing API during the execution of privileged programs. A local attacker could use this flaw to escalate their privileges via a carefully-chosen system DSO library containing unsafe constructors. (CVE-2010-3856)
Red Hat would like to thank Tavis Ormandy for reporting the CVE-2010-3847 issue, and Ben Hawkes and Tavis Ormandy for reporting the CVE-2010-3856 issue.
This update also fixes the following bugs :
* Previously, the generic implementation of the strstr() and memmem() functions did not handle certain periodic patterns correctly and could find a false positive match. This error has been fixed, and both functions now work as expected. (BZ#643341)
* The 'TCB_ALIGNMENT' value has been increased to 32 bytes to prevent applications from crashing during symbol resolution on 64-bit systems with support for Intel AVX vector registers. (BZ#643343)
All users are advised to upgrade to these updated packages, which contain backported patches to correct these issues.
Solution
Update the affected packages.See Also
https://access.redhat.com/security/cve/cve-2010-3847
Plugin Details
Severity: High
ID: 50640
File Name: redhat-RHSA-2010-0872.nasl
Version: 1.25
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 11/18/2010
Updated: 1/14/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: High
Score: 8.9
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 6
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:6.0, p-cpe:/a:redhat:enterprise_linux:glibc-headers, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:glibc-debuginfo, p-cpe:/a:redhat:enterprise_linux:glibc-common, p-cpe:/a:redhat:enterprise_linux:glibc-devel, p-cpe:/a:redhat:enterprise_linux:glibc-static, p-cpe:/a:redhat:enterprise_linux:glibc-utils, p-cpe:/a:redhat:enterprise_linux:glibc, p-cpe:/a:redhat:enterprise_linux:nscd
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 11/10/2010
Vulnerability Publication Date: 1/7/2011
Exploitable With
CANVAS (CANVAS)
Core Impact
Metasploit (glibc LD_AUDIT Arbitrary DSO Load Privilege Escalation)
Reference Information
CVE: CVE-2010-3847, CVE-2010-3856
RHSA: 2010:0872