Link following in Freedesktop pyxdg



| Updated: 2020-08-10
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2014-1624
CWE-ID CWE-59
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		pyxdg
Other software / Other software solutions

Vendor Freedesktop.org

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Link following

EUVDB-ID: #VU42101

Risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-1624

CWE-ID: CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.

Race condition in the xdg.BaseDirectory.get_runtime_dir function in python-xdg 0.25 allows local users to overwrite arbitrary files by pre-creating /tmp/pyxdg-runtime-dir-fallback-victim to point to a victim-owned location, then replacing it with a symlink to an attacker-controlled location once the get_runtime_dir function is called.

Mitigation

Install update from vendor's website.

Vulnerable software versions

pyxdg: 0.25

CPE2.3 External links

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=736247
http://www.openwall.com/lists/oss-security/2014/01/21/3
http://www.openwall.com/lists/oss-security/2014/01/21/4
http://www.securityfocus.com/bid/65042
http://exchange.xforce.ibmcloud.com/vulnerabilities/90618


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.



###SIDEBAR###