Permissions, Privileges, and Access Controls in GNU C Library (glibc) - CVE-2010-3856
Published: January 7, 2011 / Updated: June 17, 2021
Vulnerability identifier: #VU45489
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2010-3856
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
ld.so in the GNU C Library (aka glibc or libc6) before 2.11.3, and 2.12.x before 2.12.2, does not properly restrict use of the LD_AUDIT environment variable to reference dynamic shared objects (DSOs) as audit objects, which allows local users to gain privileges by leveraging an unsafe DSO located in a trusted library directory, as demonstrated by libpcprofile.so.
Affected software
GNU C Library (glibc)
Gentoo Linux
Slackware Linux
sys-libs/glibc
Gentoo Linux
Slackware Linux
sys-libs/glibc
How to mitigate CVE-2010-3856
Install update from vendor's website.
sys-libs/glibc - update to 2.11.2-r3
Links to Public Exploits and PoC-codes
- Exploit #6390 - glibc - 'LD_AUDIT' Arbitrary DSO Load Privilege Escalation (Metasploit) (June 17, 2021)
- Exploit #4395 - glibc - 'LD_AUDIT' Arbitrary DSO Load Privilege Escalation (August 11, 2020)
- Exploit #4405 - GNU C Library 2.x (libc6) - (Dynamic Linker LD_AUDIT Arbitrary DSO Load) Privilege Escalation (August 11, 2020)
- Exploit #4118 - glibc LD_AUDIT Arbitrary DSO Load Privilege Escalation (August 11, 2020)
External References
- http://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html
- http://seclists.org/fulldisclosure/2010/Oct/344
- http://seclists.org/fulldisclosure/2019/Jun/18
- http://secunia.com/advisories/42787
- http://security.gentoo.org/glsa/glsa-201011-01.xml
- http://sourceware.org/ml/libc-hacker/2010-10/msg00010.html
- http://support.avaya.com/css/P8/documents/100121017
- http://www.debian.org/security/2010/dsa-2122
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:212
- http://www.redhat.com/support/errata/RHSA-2010-0872.html
- http://www.securityfocus.com/archive/1/515545/100/0/threaded
- http://www.securityfocus.com/bid/44347
- http://www.ubuntu.com/usn/USN-1009-1
- http://www.vmware.com/security/advisories/VMSA-2011-0001.html
- http://www.vupen.com/english/advisories/2011/0025
- https://bugzilla.redhat.com/show_bug.cgi?id=645672
- https://lists.opensuse.org/opensuse-security-announce/2010-10/msg00007.html
- https://rhn.redhat.com/errata/RHSA-2010-0793.html
- https://seclists.org/bugtraq/2019/Jun/14
- https://www.exploit-db.com/exploits/44025/