Path traversal in libsoup

1) Path traversal

EUVDB-ID: #VU32834

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-2524

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in soup-uri.c in SoupServer in libsoup before 2.35.4. A remote authenticated attacker can send a specially crafted HTTP request and remote attackers to read arbitrary files via a %2e%2e (encoded dot dot) in a URI.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libsoup: 2.0 - 2.71.0

CPE2.3

• cpe:2.3:a:gnome:libsoup:2.0:*:*:*:*:*:*:*
• cpe:2.3:a:gnome:libsoup:2.2:*:*:*:*:*:*:*
• cpe:2.3:a:gnome:libsoup:2.2.0:*:*:*:*:*:*:*

External links

https://git.gnome.org/browse/libsoup/tree/NEWS
https://lists.fedoraproject.org/pipermail/package-announce/2011-August/063431.html
https://secunia.com/advisories/47299
https://www.debian.org/security/2011/dsa-2369
https://www.redhat.com/support/errata/RHSA-2011-1102.html
https://www.securitytracker.com/id?1025864
https://www.ubuntu.com/usn/USN-1181-1
https://bugzilla.gnome.org/show_bug.cgi?id=653258

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.