CVE-2011-3184

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-08-29 · updated 2026-06-16
Weakness: CWE-399

Description

The msn_httpconn_parse_data function in httpconn.c in the MSN protocol plugin in libpurple in Pidgin before 2.10.0 does not properly handle HTTP 100 responses, which allows remote attackers to cause a denial of service (incorrect memory access and application crash) via vectors involving a crafted server message.

Affected products

Pidgin: through 2.9.0; 2.0.0, 2.0.1, 2.0.2, 2.1.0, 2.1.1, 2.2.0 (+37)

References

http://developer.pidgin.im/viewmtn/revision/diff/5c2dba4a7e2e76b76e7f472b88953a4316706d43/with/16af0661899a978b4fedc1c165965b85009013d1/libpurple/protocols/msn/httpconn.c
http://developer.pidgin.im/viewmtn/revision/info/16af0661899a978b4fedc1c165965b85009013d1
http://lists.fedoraproject.org/pipermail/package-announce/2011-August/064943.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065190.html
http://pidgin.im/news/security/?id=54
http://secunia.com/advisories/45663
http://secunia.com/advisories/45916
http://securitytracker.com/id?1025961
http://www.openwall.com/lists/oss-security/2011/08/22/10
http://www.openwall.com/lists/oss-security/2011/08/22/12
http://www.openwall.com/lists/oss-security/2011/08/22/4
http://www.openwall.com/lists/oss-security/2011/08/22/7

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