Pidgin: MSN DirectConnect DoS (crash) after receiving a short P2P message
Published Jan 7, 2011
4.0
MEDIUMCVSS 2.0
EPSS 2.55%
Description
directconn.c in the MSN protocol plugin in libpurple 2.7.6 through 2.7.8 in Pidgin before 2.7.9 allows remote authenticated users to cause a denial of service (NULL pointer dereference and application crash) via a short p2pv2 packet in a DirectConnect (aka direct connection) session.
Affected products
No data.
- 2.7.6
- 2.7.7
- 2.7.8
- ≤ 2.7.8
- 2.0.0
- 2.0.1
- 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
- 2.4.1
- 2.4.2
- 2.4.3
- 2.5.0
- 2.5.1
- 2.5.2
- 2.5.3
- 2.5.4
- 2.5.5
- 2.5.6
- 2.5.7
- 2.5.8
- 2.5.9
- 2.6.0
- 2.6.1
- 2.6.2
- 2.6.4
- 2.6.5
- 2.6.6
- 2.7.0
- 2.7.1
- 2.7.2
- 2.7.3
- 2.7.4
- 2.7.5
- 2.7.6
- 2.7.7
No data.
Red Hat Enterprise Linux 4
pidgin
Not affected
Red Hat Enterprise Linux 5
pidgin
Not affected
Red Hat Enterprise Linux 6
pidgin
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | pidgin | Not affected | n/a |
| Red Hat Enterprise Linux 5 | pidgin | Not affected | n/a |
| Red Hat Enterprise Linux 6 | pidgin | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of pidgin package as shipped with Red Hat Enterprise Linux 4, 5, and 6 as this issue is specific to versions of libpurple from 2.7.6 up to 2.7.8.
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:S/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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.55% (0.02548) | 84.46th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.55% (0.02548) | 82.92th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.69% (0.02691) | 84.55th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.65% (0.04652) | 81.80th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.60% (0.02597) | 84.58th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.19% (0.02185) | 89.80th | v3 (v2023.03.01) |
| Mar 9, 2024 | 2.19% (0.02185) | 89.11th | v3 (v2023.03.01) |
| Dec 6, 2023 | 1.55% (0.01552) | 85.71th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.78% (0.00777) | 78.58th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.53% (0.02528) | 81.92th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.53% (0.02528) | 80.15th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.53% (0.02528) | 58.66th | v2 (v2022.01.01) |
References (22)
- http://developer.pidgin.im/viewmtn/revision/diff/e76f4ad4ef2f10588195a0eedc7a08f82062f79c/with/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031/libpurple/protocols/msn/directconn.c x_refsource_CONFIRMPatch
- http://developer.pidgin.im/viewmtn/revision/info/aaa07bde3c51d3684391ae6ed86b6dbaeab5d031 x_refsource_CONFIRMPatch
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052862.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2011-January/052905.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00003.html vendor-advisoryx_refsource_SUSE
- http://pidgin.im/pipermail/support/2010-December/009251.html mailing-listx_refsource_MLISTPatch
- http://secunia.com/advisories/42732 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/42824 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/42877 third-party-advisoryx_refsource_SECUNIA
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:259 vendor-advisoryx_refsource_MANDRIVA
- http://www.openwall.com/lists/oss-security/2010/12/27/1 mailing-listx_refsource_MLISTPatch
- http://www.openwall.com/lists/oss-security/2010/12/31/5 mailing-listx_refsource_MLISTPatch
- http://www.pidgin.im/news/security/?id=49 x_refsource_CONFIRMPatchVendor Advisory
- http://www.securityfocus.com/bid/45581 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2011/0028 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0054 vdb-entryx_refsource_VUPEN
- http://www.vupen.com/english/advisories/2011/0076 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2010-4528 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=665421 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2010-4528
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18461 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2010-4528
Change history (0)
No recorded changes yet.