#VU45488 Link following in Glibc - CVE-2010-3847
Vulnerability identifier: #VU45488
Vulnerability risk: High
CVSSv4.0: 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/E:A/U:Amber]
CVE-ID:
CWE-ID:
CWE-59
Exploitation vector: Network
Exploit availability: Yes
Vulnerable software:
Glibc
Universal components / Libraries /
Libraries used by multiple products
Vendor: GNU
Description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
elf/dl-load.c in ld.so in the GNU C Library (aka glibc or libc6) through 2.11.2, and 2.12.x through 2.12.1, does not properly handle a value of $ORIGIN for the LD_AUDIT environment variable, which allows local users to gain privileges via a crafted dynamic shared object (DSO) located in an arbitrary directory.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Glibc: 1.00 - 2.12.1
External links
https://seclists.org/fulldisclosure/2010/Oct/257
https://seclists.org/fulldisclosure/2010/Oct/292
https://seclists.org/fulldisclosure/2010/Oct/294
https://secunia.com/advisories/42787
https://security.gentoo.org/glsa/glsa-201011-01.xml
https://sourceware.org/ml/libc-hacker/2010-10/msg00007.html
https://support.avaya.com/css/P8/documents/100120941
https://www.debian.org/security/2010/dsa-2122
https://www.kb.cert.org/vuls/id/537223
https://www.mandriva.com/security/advisories?name=MDVSA-2010:207
https://www.redhat.com/support/errata/RHSA-2010-0872.html
https://www.securityfocus.com/archive/1/515545/100/0/threaded
https://www.securityfocus.com/bid/44154
https://www.ubuntu.com/usn/USN-1009-1
https://www.vmware.com/security/advisories/VMSA-2011-0001.html
https://www.vupen.com/english/advisories/2011/0025
https://bugzilla.redhat.com/show_bug.cgi?id=643306
https://lists.opensuse.org/opensuse-security-announce/2010-10/msg00007.html
https://rhn.redhat.com/errata/RHSA-2010-0787.html
https://www.exploit-db.com/exploits/44024/
https://www.exploit-db.com/exploits/44025/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.
