#VU45471 Link following in dpkg - CVE-2011-0402

Vulnerability identifier: #VU45471

Vulnerability risk: Medium

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-0402

CWE-ID: CWE-59

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
dpkg
Other software / Other software solutions

Vendor: Debian Package Manager

Description

The vulnerability allows a remote attacker to overwrite arbitrary files on the system.

dpkg-source in dpkg before 1.14.31 and 1.15.x allows user-assisted remote attackers to modify arbitrary files via a symlink attack on unspecified files in the .pc directory.

Mitigation
Install update from vendor's website.

Vulnerable software versions

dpkg: 1.9.19 - 1.9.21, 1.10 - 1.15.8.8

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External links
https://lists.fedoraproject.org/pipermail/package-announce/2011-January/053306.html
https://lists.fedoraproject.org/pipermail/package-announce/2011-January/053311.html
https://osvdb.org/70367
https://secunia.com/advisories/42826
https://secunia.com/advisories/42831
https://secunia.com/advisories/43054
https://www.debian.org/security/2011/dsa-2142
https://www.securityfocus.com/bid/45703
https://www.ubuntu.com/usn/USN-1038-1
https://www.vupen.com/english/advisories/2011/0040
https://www.vupen.com/english/advisories/2011/0044
https://www.vupen.com/english/advisories/2011/0196
https://exchange.xforce.ibmcloud.com/vulnerabilities/64614

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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.