CVE-2015-5700
First published: Mon Jan 12 2015(Updated: )
It was reported [1] that mktexlsr script uses /tmp in an insecure way. Part of original report: ... This is how mktexlsr uses temporary files (with boring parts snipped): treefile="${TMPDIR-/tmp}/mktexlsrtrees$$.tmp" # ... while test $# -gt 0; do # ... (umask 077 if echo "$1" >>"$treefile"; then :; else echo "$progname: $treefile: could not append to arg file, goodbye." >&2 exit 1 fi # ... done This is insecure because the filename is predictable and, more importantly, the program doesn't fail atomically if the file already exists. ... Suggested patch is attached. [1]: <a href="https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=775139">https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=775139</a>
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Tug Texlive | =20100722 | |
| Tug Texlive | =20110705 | |
| Tug Texlive | =20120701 | |
| Tug Texlive | =20130530 | |
| Tug Texlive | =20140525 | |
| ubuntu/texlive-bin | <2013.20130729.30972-2ubuntu0.1 | 2013.20130729.30972-2ubuntu0.1 |
| ubuntu/texlive-bin | <2014.20140926.35254-5 | 2014.20140926.35254-5 |
| debian/texlive-bin | 2020.20200327.54578-7+deb11u1 2022.20220321.62855-5.1+deb12u1 2024.20240313.70630+ds-4 |
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Reference 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://usn.ubuntu.com/3788-1/
- 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
- https://www.tug.org/svn/texlive/trunk/Build/source/texk/kpathsea/mktexlsr?r1=19613&r2=22885
- https://launchpad.net/bugs/cve/CVE-2015-5700
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=979176
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=979176&action=edit
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1181169
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1181167#c3
- http://seclists.org/oss-sec/2015/q3/250
- https://access.redhat.com/security/cve/CVE-2015-5700
- http://tug.org/svn/texlive/trunk/Build/source/texk/kpathsea/mktexlsr?r1=19613&r2=22885
- https://access.redhat.com/security/cve/CVE-2015-5701
- http://tug.org/svn/texlive/trunk/Build/source/texk/kpathsea/mktexlsr?r1=36626&r2=36855
- https://www.openwall.com/lists/oss-security/2015/04/23/22
- https://www.openwall.com/lists/oss-security/2015/07/28/5
- https://security-tracker.debian.org/tracker/CVE-2015-5700
- http://www.openwall.com/lists/oss-security/2015/04/23/22
- http://www.openwall.com/lists/oss-security/2015/07/28/5
- https://ubuntu.com/security/notices/USN-3788-1
- https://www.cve.org/CVERecord?id=CVE-2015-5700
- https://nvd.nist.gov/vuln/detail/CVE-2015-5700
- https://ubuntu.com/security/CVE-2015-5700
Frequently Asked Questions
What is CVE-2015-5700?
CVE-2015-5700 is a vulnerability that allows local users to write to arbitrary files via a symlink attack in mktexlsr revision 22855 through revision 36625 as packaged in texlive.
Which software versions are affected by CVE-2015-5700?
The texlive package versions 2014.20140926.35254-5, 2013.20130729.30972-2ubuntu0.1, 20100722, 20110705, 20120701, 20130530, and 20140525 are affected by CVE-2015-5700.
How can this vulnerability be exploited?
This vulnerability can be exploited by local users who can create a symlink attack to write to arbitrary files.
What is the severity of CVE-2015-5700?
The severity of CVE-2015-5700 is medium with a severity value of 6.1.
Where can I find more information about CVE-2015-5700?
You can find more information about CVE-2015-5700 at the following references: [1] [2] [3].
- collector/nvd-index
- agent/remedy
- collector/launchpad-cve
- source/Launchpad
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2015-5700
- agent/first-publish-date
- agent/type
- agent/author
- agent/softwarecombine
- agent/severity
- agent/weakness
- agent/references
- collector/security-tracker-debian
- source/Debian
- agent/software-canonical-lookup
- collector/nvd-cve
- source/NVD
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/tags
- agent/event
- collector/usn-cve
- source/Ubuntu
- vendor/tug
- canonical/tug texlive
- version/tug texlive/20100722
- version/tug texlive/20110705
- version/tug texlive/20120701
- version/tug texlive/20130530
- version/tug texlive/20140525
- package-manager/debian
- package-manager/ubuntu