Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2010-3847

Improper Link Resolution Before File Access ('Link Following')

Published: Jan 07, 2011 | Modified: Apr 11, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
6.9 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C
RedHat/V2
7.2 IMPORTANT
AV:L/AC:L/Au:N/C:C/I:C/A:C
RedHat/V3
Ubuntu
NEGLIGIBLE
Vulnerability-free packages from our partners
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2010-3847
CWEhttps://cwe.mitre.org/data/definitions/59.html

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.

Weakness

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

Affected Software

NameVendorStart VersionEnd Version
GlibcGnu*2.11.2 (including)
GlibcGnu1.00 (including)1.00 (including)
GlibcGnu1.01 (including)1.01 (including)
GlibcGnu1.02 (including)1.02 (including)
GlibcGnu1.03 (including)1.03 (including)
GlibcGnu1.04 (including)1.04 (including)
GlibcGnu1.05 (including)1.05 (including)
GlibcGnu1.06 (including)1.06 (including)
GlibcGnu1.07 (including)1.07 (including)
GlibcGnu1.08 (including)1.08 (including)
GlibcGnu1.09 (including)1.09 (including)
GlibcGnu1.09.1 (including)1.09.1 (including)
GlibcGnu2.0 (including)2.0 (including)
GlibcGnu2.0.1 (including)2.0.1 (including)
GlibcGnu2.0.2 (including)2.0.2 (including)
GlibcGnu2.0.3 (including)2.0.3 (including)
GlibcGnu2.0.4 (including)2.0.4 (including)
GlibcGnu2.0.5 (including)2.0.5 (including)
GlibcGnu2.0.6 (including)2.0.6 (including)
GlibcGnu2.1 (including)2.1 (including)
GlibcGnu2.1.1 (including)2.1.1 (including)
GlibcGnu2.1.1.6 (including)2.1.1.6 (including)
GlibcGnu2.1.2 (including)2.1.2 (including)
GlibcGnu2.1.3 (including)2.1.3 (including)
GlibcGnu2.1.3.10 (including)2.1.3.10 (including)
GlibcGnu2.1.9 (including)2.1.9 (including)
GlibcGnu2.2 (including)2.2 (including)
GlibcGnu2.2.1 (including)2.2.1 (including)
GlibcGnu2.2.2 (including)2.2.2 (including)
GlibcGnu2.2.3 (including)2.2.3 (including)
GlibcGnu2.2.4 (including)2.2.4 (including)
GlibcGnu2.2.5 (including)2.2.5 (including)
GlibcGnu2.3 (including)2.3 (including)
GlibcGnu2.3.1 (including)2.3.1 (including)
GlibcGnu2.3.2 (including)2.3.2 (including)
GlibcGnu2.3.3 (including)2.3.3 (including)
GlibcGnu2.3.4 (including)2.3.4 (including)
GlibcGnu2.3.5 (including)2.3.5 (including)
GlibcGnu2.3.6 (including)2.3.6 (including)
GlibcGnu2.3.10 (including)2.3.10 (including)
GlibcGnu2.4 (including)2.4 (including)
GlibcGnu2.5 (including)2.5 (including)
GlibcGnu2.5.1 (including)2.5.1 (including)
GlibcGnu2.6 (including)2.6 (including)
GlibcGnu2.6.1 (including)2.6.1 (including)
GlibcGnu2.7 (including)2.7 (including)
GlibcGnu2.8 (including)2.8 (including)
GlibcGnu2.9 (including)2.9 (including)
GlibcGnu2.10 (including)2.10 (including)
GlibcGnu2.10.1 (including)2.10.1 (including)
GlibcGnu2.10.2 (including)2.10.2 (including)
GlibcGnu2.11 (including)2.11 (including)
GlibcGnu2.11.1 (including)2.11.1 (including)
GlibcGnu2.12.0 (including)2.12.0 (including)
GlibcGnu2.12.1 (including)2.12.1 (including)
Red Hat Enterprise Linux 5RedHatglibc-0:2.5-49.el5_5.6*
Red Hat Enterprise Linux 6RedHatglibc-0:2.12-1.7.el6_0.3*
EglibcUbuntukarmic*
EglibcUbuntulucid*
EglibcUbuntumaverick*
GlibcUbuntuhardy*
GlibcUbuntujaunty*

Potential Mitigations

  • Follow the principle of least privilege when assigning access rights to entities in a software system.
  • Denying access to a file can prevent an attacker from replacing that file with a link to a sensitive file. Ensure good compartmentalization in the system to provide protected areas that can be trusted.

References

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