Pidgin: NULL pointer dereference by processing incomplete MSN SLP invite (DoS)
Published Sep 8, 2009
5.0
MEDIUMCVSS 2.0
EPSS 2.68%
Description
The msn_slp_sip_recv function in libpurple/protocols/msn/slp.c in the MSN protocol plugin in libpurple in Pidgin before 2.6.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an SLP invite message that lacks certain required fields, as demonstrated by a malformed message from a KMess client.
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 1, 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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.68% (0.02683) | 85.31th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.68% (0.02683) | 83.83th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.28% (0.01284) | 77.77th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.68% (0.02676) | 76.33th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.46% (0.01461) | 79.52th | v4 (v2025.03.14) |
| Dec 17, 2024 | 5.66% (0.05664) | 93.21th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.54% (0.04540) | 91.21th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.41% (0.01408) | 72.89th | v2 (v2022.01.01) |
| Mar 2, 2023 | 1.41% (0.01408) | 72.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.41% (0.01408) | 70.87th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.41% (0.01408) | 49.94th | v2 (v2022.01.01) |
References (12)
- http://developer.pidgin.im/ticket/10159 x_refsource_CONFIRMPatchVendor Advisory
- http://developer.pidgin.im/viewmtn/revision/diff/6d3fc30a0a0a379281efc5a6872a9c1d7c24c650/with/b4a95ea62b81a06ffc1993912471c511b786efdd/libpurple/protocols/msn/slp.c x_refsource_CONFIRMPatchVendor Advisory
- http://developer.pidgin.im/viewmtn/revision/info/b4a95ea62b81a06ffc1993912471c511b786efdd x_refsource_CONFIRMPatchVendor Advisory
- http://secunia.com/advisories/36601 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.pidgin.im/news/security/index.php?id=39 x_refsource_CONFIRMPatchVendor Advisory
- http://www.securityfocus.com/bid/36277 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2009-3083 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=521832 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-3083
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11852 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6322 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2009-3083
Change history (0)
No recorded changes yet.