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RedhatCVE-2011-2943

HistoryAug 29, 2011 - 5:55 p.m.

CVE-2011-2943

2011-08-2917:55:00

redhat

web.nvd.nist.gov

cve-2011-2943

libpurple

pidgin

irc

denial of service

remote attackers

nvd

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:N/A:P

AI Score

6.3

Confidence

High

EPSS

0.11

Percentile

95.2%

JSON

The irc_msg_who function in msgs.c in the IRC protocol plugin in libpurple 2.8.0 through 2.9.0 in Pidgin before 2.10.0 does not properly validate characters in nicknames, which allows user-assisted remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted nickname that is not properly handled in a WHO response.

Affected configurations

Nvd

Node

pidginlibpurpleMatch2.8.0

pidginlibpurpleMatch2.9.0

pidginpidginRange≤2.9.0

pidginpidginMatch2.0.0

pidginpidginMatch2.0.1

pidginpidginMatch2.0.2

pidginpidginMatch2.1.0

pidginpidginMatch2.1.1

pidginpidginMatch2.2.0

pidginpidginMatch2.2.1

pidginpidginMatch2.2.2

pidginpidginMatch2.3.0

pidginpidginMatch2.3.1

pidginpidginMatch2.4.0

pidginpidginMatch2.4.1

pidginpidginMatch2.4.2

pidginpidginMatch2.4.3

pidginpidginMatch2.5.0

pidginpidginMatch2.5.1

pidginpidginMatch2.5.2

pidginpidginMatch2.5.3

pidginpidginMatch2.5.4

pidginpidginMatch2.5.5

pidginpidginMatch2.5.6

pidginpidginMatch2.5.7

pidginpidginMatch2.5.8

pidginpidginMatch2.5.9

pidginpidginMatch2.6.0

pidginpidginMatch2.6.1

pidginpidginMatch2.6.2

pidginpidginMatch2.6.4

pidginpidginMatch2.6.5

pidginpidginMatch2.6.6

pidginpidginMatch2.7.0

pidginpidginMatch2.7.1

pidginpidginMatch2.7.2

pidginpidginMatch2.7.3

pidginpidginMatch2.7.4

pidginpidginMatch2.7.5

pidginpidginMatch2.7.6

pidginpidginMatch2.7.7

pidginpidginMatch2.7.8

pidginpidginMatch2.7.9

pidginpidginMatch2.7.10

pidginpidginMatch2.7.11

pidginpidginMatch2.8.0

VendorProductVersionCPE
pidginlibpurple2.8.0cpe:2.3:a:pidgin:libpurple:2.8.0:*:*:*:*:*:*:*
pidginlibpurple2.9.0cpe:2.3:a:pidgin:libpurple:2.9.0:*:*:*:*:*:*:*
pidginpidgin*cpe:2.3:a:pidgin:pidgin:*:*:*:*:*:*:*:*
pidginpidgin2.0.0cpe:2.3:a:pidgin:pidgin:2.0.0:*:*:*:*:*:*:*
pidginpidgin2.0.1cpe:2.3:a:pidgin:pidgin:2.0.1:*:*:*:*:*:*:*
pidginpidgin2.0.2cpe:2.3:a:pidgin:pidgin:2.0.2:*:*:*:*:*:*:*
pidginpidgin2.1.0cpe:2.3:a:pidgin:pidgin:2.1.0:*:*:*:*:*:*:*
pidginpidgin2.1.1cpe:2.3:a:pidgin:pidgin:2.1.1:*:*:*:*:*:*:*
pidginpidgin2.2.0cpe:2.3:a:pidgin:pidgin:2.2.0:*:*:*:*:*:*:*
pidginpidgin2.2.1cpe:2.3:a:pidgin:pidgin:2.2.1:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
pidgin	libpurple	2.8.0	cpe:2.3:a:pidgin:libpurple:2.8.0:::::::*
pidgin	libpurple	2.9.0	cpe:2.3:a:pidgin:libpurple:2.9.0:::::::*
pidgin	pidgin	*	cpe:2.3:a:pidgin:pidgin::::::::
pidgin	pidgin	2.0.0	cpe:2.3:a:pidgin:pidgin:2.0.0:::::::*
pidgin	pidgin	2.0.1	cpe:2.3:a:pidgin:pidgin:2.0.1:::::::*
pidgin	pidgin	2.0.2	cpe:2.3:a:pidgin:pidgin:2.0.2:::::::*
pidgin	pidgin	2.1.0	cpe:2.3:a:pidgin:pidgin:2.1.0:::::::*
pidgin	pidgin	2.1.1	cpe:2.3:a:pidgin:pidgin:2.1.1:::::::*
pidgin	pidgin	2.2.0	cpe:2.3:a:pidgin:pidgin:2.2.0:::::::*
pidgin	pidgin	2.2.1	cpe:2.3:a:pidgin:pidgin:2.2.1:::::::*

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References

developer.pidgin.im/viewmtn/revision/diff/5749f9193063800d27bef75c2388f6f9cc2f7f37/with/5c2dba4a7e2e76b76e7f472b88953a4316706d43/libpurple/protocols/irc/msgs.c

developer.pidgin.im/viewmtn/revision/info/5c2dba4a7e2e76b76e7f472b88953a4316706d43

pidgin.im/news/security/?id=53

secunia.com/advisories/45663

secunia.com/advisories/45916

securitytracker.com/id?1025961

www.openwall.com/lists/oss-security/2011/08/20/2

www.openwall.com/lists/oss-security/2011/08/22/2

www.securityfocus.com/bid/49268

bugzilla.redhat.com/show_bug.cgi?id=722939

exchange.xforce.ibmcloud.com/vulnerabilities/69340

oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18005