Link following in texlive - CVE-2015-5701
Published: August 25, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU38425
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2015-5701
CWE-ID: CWE-59
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
texlive
texlive
Software vendor:
TeX Users Group
TeX Users Group
Description
The vulnerability allows a local authenticated user to read and manipulate data.
mktexlsr revision 36855, and before revision 36626 as packaged in texlive allows local users to write to arbitrary files via a symlink attack. NOTE: this vulnerability exists due to the reversion of a fix of CVE-2015-5700.
Remediation
Install update from vendor's website.
External links
- http://www.openwall.com/lists/oss-security/2015/07/30/6
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=775139
- https://bugzilla.redhat.com/show_bug.cgi?id=1181167
- https://www.tug.org/svn/texlive/trunk/Build/source/texk/kpathsea/mktexlsr?r1=19613&r2=22885
- https://www.tug.org/svn/texlive/trunk/Build/source/texk/kpathsea/mktexlsr?view=log