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CVE-2011-4603

The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin...

5.0 MediumFix available

The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted message, a different vulnerability than CVE-2011-3594.

Exploit likelihood

3.60%Up 2.2 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 5.0

The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted message, a different vulnerability than CVE-2011-3594.

Record
CVE-2011-4603
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-20
Updated
2026-11-02
CVE List No score

The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted message, a different vulnerability than CVE-2011-3594.

Record
CVE-2011-4603
Updated
2026-11-02
EUVDEUVD-2011-4527 No score

The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted message, a different vulnerability than CVE-2011-3594.

Record
EUVD-2011-4527
Updated
2026-11-03
GitHub AdvisoriesGHSA-6f79-g335-f9mf No score

The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin...

The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted message, a different vulnerability than CVE-2011-3594.

Record
GHSA-6f79-g335-f9mf
Weakness
CWE-20
Updated
2026-11-02
OSV No score

The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted message, a different vulnerability than CVE-2011-3594.

Record
CVE-2011-4603
Updated
2026-11-02
OSVDEBIAN-CVE-2011-4603 No score

The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted message, a different vulnerability than CVE-2011-3594.

Record
DEBIAN-CVE-2011-4603
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
pidgin
Debian:12
 before 2.10.1-1
2.10.1-1
pidgin
Debian:13
 before 2.10.1-1
2.10.1-1
pidgin
Debian:14
 before 2.10.1-1
2.10.1-1
finch
Red Hat:enterprise_linux:4::as
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
finch-devel
Red Hat:enterprise_linux:4::as
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple
Red Hat:enterprise_linux:4::as
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple-devel
Red Hat:enterprise_linux:4::as
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple-perl
Red Hat:enterprise_linux:4::as
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple-tcl
Red Hat:enterprise_linux:4::as
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin
Red Hat:enterprise_linux:4::as
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
Show 55 moreShow less
Affected packages
PackageAffectedFixed
pidgin-debuginfo
Red Hat:enterprise_linux:4::as
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin-devel
Red Hat:enterprise_linux:4::as
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin-perl
Red Hat:enterprise_linux:4::as
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
finch
Red Hat:enterprise_linux:4::desktop
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
finch-devel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple
Red Hat:enterprise_linux:4::desktop
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple-devel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple-perl
Red Hat:enterprise_linux:4::desktop
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple-tcl
Red Hat:enterprise_linux:4::desktop
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin
Red Hat:enterprise_linux:4::desktop
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin-debuginfo
Red Hat:enterprise_linux:4::desktop
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin-devel
Red Hat:enterprise_linux:4::desktop
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin-perl
Red Hat:enterprise_linux:4::desktop
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
finch
Red Hat:enterprise_linux:4::es
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
finch-devel
Red Hat:enterprise_linux:4::es
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple
Red Hat:enterprise_linux:4::es
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple-devel
Red Hat:enterprise_linux:4::es
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple-perl
Red Hat:enterprise_linux:4::es
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple-tcl
Red Hat:enterprise_linux:4::es
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin
Red Hat:enterprise_linux:4::es
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin-debuginfo
Red Hat:enterprise_linux:4::es
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin-devel
Red Hat:enterprise_linux:4::es
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin-perl
Red Hat:enterprise_linux:4::es
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
finch
Red Hat:enterprise_linux:4::ws
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
finch-devel
Red Hat:enterprise_linux:4::ws
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple
Red Hat:enterprise_linux:4::ws
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple-devel
Red Hat:enterprise_linux:4::ws
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple-perl
Red Hat:enterprise_linux:4::ws
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
libpurple-tcl
Red Hat:enterprise_linux:4::ws
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin
Red Hat:enterprise_linux:4::ws
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin-debuginfo
Red Hat:enterprise_linux:4::ws
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin-devel
Red Hat:enterprise_linux:4::ws
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
pidgin-perl
Red Hat:enterprise_linux:4::ws
From an advisory covering 3 CVEs
 before 0:2.6.6-10.el4
0:2.6.6-10.el4
finch
Red Hat:enterprise_linux:5::client
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
libpurple
Red Hat:enterprise_linux:5::client
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
libpurple-perl
Red Hat:enterprise_linux:5::client
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
libpurple-tcl
Red Hat:enterprise_linux:5::client
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
pidgin
Red Hat:enterprise_linux:5::client
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
pidgin-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
pidgin-perl
Red Hat:enterprise_linux:5::client
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
finch-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
libpurple-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
pidgin
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
pidgin-debuginfo
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
pidgin-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
finch
Red Hat:rhel_productivity:5
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
finch-devel
Red Hat:rhel_productivity:5
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
libpurple
Red Hat:rhel_productivity:5
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
libpurple-devel
Red Hat:rhel_productivity:5
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
libpurple-perl
Red Hat:rhel_productivity:5
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
libpurple-tcl
Red Hat:rhel_productivity:5
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
pidgin
Red Hat:rhel_productivity:5
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
pidgin-debuginfo
Red Hat:rhel_productivity:5
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
pidgin-devel
Red Hat:rhel_productivity:5
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4
pidgin-perl
Red Hat:rhel_productivity:5
From an advisory covering 3 CVEs
 before 0:2.6.6-5.el5_7.4
0:2.6.6-5.el5_7.4

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-4603 is a medium vulnerability (CVSS 5.0) in Pidgin, published December 17, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.60%, the 89th percentile. Fixed in pidgin 2.10.1-1.

References

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