Pidgin: NULL pointer dereference by handling IRC topic(s) (DoS)
Published Sep 8, 2009
5.0
MEDIUMCVSS 2.0
EPSS 1.92%
Description
libpurple/protocols/irc/msgs.c in the IRC protocol plugin in libpurple in Pidgin before 2.6.2 allows remote IRC servers to cause a denial of service (NULL pointer dereference and application crash) via a TOPIC message that lacks a topic string.
Affected products
No data.
- ≤ 2.6.1
- 2.0.0
- 2.0.1
- 2.0.2
- 2.0.2
- 2.1.0
- 2.1.1
- 2.2.0
- 2.2.1
- 2.2.2
- 2.3.0
- 2.3.1
- 2.4.0
- 2.4.0
- 2.4.1
- 2.4.1
- 2.4.2
- 2.4.2
- 2.4.3
- 2.4.3
- 2.5.0
- 2.5.0
- 2.5.1
- 2.5.2
- 2.5.2
- 2.5.3
- 2.5.3
- 2.5.4
- 2.5.4
- 2.5.5
- 2.5.5
- 2.5.6
- 2.5.7
- 2.5.8
- 2.5.9
- 2.6.0
No data.
Red Hat Enterprise Linux 3
pidgin-0:1.5.1-6.el3
Fixed · RHSA-2009:1535
Red Hat Enterprise Linux 4
pidgin-0:2.6.2-2.el4
Fixed · RHSA-2009:1453
Red Hat Enterprise Linux 5
pidgin-0:2.6.2-2.el5
Fixed · RHSA-2009:1453
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 3 | pidgin-0:1.5.1-6.el3 | Fixed | RHSA-2009:1535 |
| Red Hat Enterprise Linux 4 | pidgin-0:2.6.2-2.el4 | Fixed | RHSA-2009:1453 |
| Red Hat Enterprise Linux 5 | pidgin-0:2.6.2-2.el5 | Fixed | RHSA-2009:1453 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 1.92% (0.01920) | 79.19th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.92% (0.01920) | 77.18th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.64% (0.00643) | 68.20th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.93% (0.01934) | 72.45th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.64% (0.00643) | 68.89th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.55% (0.00550) | 78.26th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.55% (0.00550) | 76.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.55% (0.00550) | 73.99th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (10)
- http://developer.pidgin.im/viewmtn/revision/info/ad2c6ee53ec9122b25aeb1f918db53be69bdeac3 x_refsource_CONFIRMPatch
- http://secunia.com/advisories/36601 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.pidgin.im/news/security/index.php?id=40 x_refsource_CONFIRMPatchVendor Advisory
- http://www.securityfocus.com/bid/36277 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2009-2703 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=521823 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-2703
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11379 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6435 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2009-2703
| Link | Providers | Tags |
|---|---|---|
| http://developer.pidgin.im/viewmtn/revision/info/ad2c6ee53ec9122b25aeb1f918db53be69bdeac3 | x_refsource_CONFIRMPatch | |
| http://secunia.com/advisories/36601 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.pidgin.im/news/security/index.php?id=40 | x_refsource_CONFIRMPatchVendor Advisory | |
| http://www.securityfocus.com/bid/36277 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2009-2703 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=521823 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2009-2703 | ||
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11379 | vdb-entrysignaturex_refsource_OVAL | |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6435 | vdb-entrysignaturex_refsource_OVAL | |
| https://www.cve.org/CVERecord?id=CVE-2009-2703 |
Change history (0)
No recorded changes yet.