pidgin: Remote crash in MSN protocol plugin
Published Aug 29, 2011
4.3
MEDIUMCVSS 2.0
EPSS 3.86%
Description
The msn_httpconn_parse_data function in httpconn.c in the MSN protocol plugin in libpurple in Pidgin before 2.10.0 does not properly handle HTTP 100 responses, which allows remote attackers to cause a denial of service (incorrect memory access and application crash) via vectors involving a crafted server message.
Affected products
No data.
- ≤ 2.9.0
- 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
- 2.7.8
- 2.7.9
- 2.7.10
- 2.7.11
- 2.8.0
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
Red Hat does not consider this to be a security flaw. As a malicious MSN server is needed, there are far worlse implications to a user connecting to an untrusted server than a DoS.
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:M/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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.86% (0.03858) | 89.84th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.86% (0.03858) | 88.77th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.69% (0.02692) | 84.55th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.90% (0.04901) | 82.26th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.69% (0.02692) | 84.87th | v4 (v2025.03.14) |
| Dec 12, 2024 | 9.63% (0.09632) | 95.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 9.63% (0.09632) | 93.79th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
References (19)
- http://developer.pidgin.im/viewmtn/revision/diff/5c2dba4a7e2e76b76e7f472b88953a4316706d43/with/16af0661899a978b4fedc1c165965b85009013d1/libpurple/protocols/msn/httpconn.c x_refsource_CONFIRMPatch
- http://developer.pidgin.im/viewmtn/revision/info/16af0661899a978b4fedc1c165965b85009013d1 x_refsource_CONFIRMPatch
- http://lists.fedoraproject.org/pipermail/package-announce/2011-August/064943.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2011-September/065190.html vendor-advisoryx_refsource_FEDORA
- http://pidgin.im/news/security/?id=54 x_refsource_CONFIRMPatchVendor Advisory
- http://secunia.com/advisories/45663 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/45916 third-party-advisoryx_refsource_SECUNIA
- http://securitytracker.com/id?1025961 vdb-entryx_refsource_SECTRACK
- http://www.openwall.com/lists/oss-security/2011/08/22/10 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2011/08/22/12 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2011/08/22/4 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2011/08/22/7 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/49268 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2011-3184 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=732405 x_refsource_CONFIRMIssue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/69341 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2011-3184
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18284 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2011-3184
Change history (0)
No recorded changes yet.