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CVE-2011-2943

UnknownEPSS 3.60%

Last modified

CVE-2011-2943 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.60% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
3.60%

88.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
PidginLibpurple2.8.0
PidginLibpurple2.9.0
PidginPidgin<= 2.9.0
PidginPidgin2.0.0
PidginPidgin2.0.1
PidginPidgin2.0.2
PidginPidgin2.1.0
PidginPidgin2.1.1
PidginPidgin2.2.0
PidginPidgin2.2.1
PidginPidgin2.2.2
PidginPidgin2.3.0
PidginPidgin2.3.1
PidginPidgin2.4.0
PidginPidgin2.4.1
PidginPidgin2.4.2
PidginPidgin2.4.3
PidginPidgin2.5.0
PidginPidgin2.5.1
PidginPidgin2.5.2
PidginPidgin2.5.3
PidginPidgin2.5.4
PidginPidgin2.5.5
PidginPidgin2.5.6
PidginPidgin2.5.7
PidginPidgin2.5.8
PidginPidgin2.5.9
PidginPidgin2.6.0
PidginPidgin2.6.1
PidginPidgin2.6.2
PidginPidgin2.6.4
PidginPidgin2.6.5
PidginPidgin2.6.6
PidginPidgin2.7.0
PidginPidgin2.7.1
PidginPidgin2.7.2
PidginPidgin2.7.3
PidginPidgin2.7.4
PidginPidgin2.7.5
PidginPidgin2.7.6
PidginPidgin2.7.7
PidginPidgin2.7.8
PidginPidgin2.7.9
PidginPidgin2.7.10
PidginPidgin2.7.11
PidginPidgin2.8.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2011-2943?
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.
How severe is CVE-2011-2943?
Severity scoring for CVE-2011-2943 is pending analysis. The EPSS model estimates a 3.60% probability of exploitation in the next 30 days.
How do I fix CVE-2011-2943?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-2943?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST