(libpurple): Invalid UTF-8 string handling in OSCAR messages
Published Dec 25, 2011
5.0
MEDIUMCVSS 2.0
EPSS 4.53%
Description
family_feedbag.c in the oscar 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 (1) AIM or (2) ICQ message associated with buddy-list addition.
Affected products
No data.
- ≤ 2.10.0
- 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
- 2.6.3
- 2.6.4
- 2.6.5
- 2.6.6
- 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
- 2.9.0
No data.
Red Hat Enterprise Linux 4
pidgin-0:2.6.6-10.el4
Fixed · RHSA-2011:1820
Red Hat Enterprise Linux 5
pidgin-0:2.6.6-5.el5_7.4
Fixed · RHSA-2011:1820
Red Hat Enterprise Linux 6
pidgin-0:2.7.9-3.el6.2
Fixed · RHSA-2011:1821
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | pidgin-0:2.6.6-10.el4 | Fixed | RHSA-2011:1820 |
| Red Hat Enterprise Linux 5 | pidgin-0:2.6.6-5.el5_7.4 | Fixed | RHSA-2011:1820 |
| Red Hat Enterprise Linux 6 | pidgin-0:2.7.9-3.el6.2 | Fixed | RHSA-2011:1821 |
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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.53% (0.04528) | 91.24th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.70% (0.04697) | 90.60th | v5 (v2026.06.15) |
| Mar 30, 2025 | 3.71% (0.03707) | 86.86th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.12% (0.05120) | 82.69th | v4 (v2025.03.14) |
| Mar 17, 2025 | 3.71% (0.03707) | 87.17th | v4 (v2025.03.14) |
| Feb 24, 2025 | 13.69% (0.13693) | 95.70th | v3 (v2023.03.01) |
| Nov 22, 2024 | 9.98% (0.09977) | 95.10th | v3 (v2023.03.01) |
| Jun 24, 2024 | 7.77% (0.07770) | 94.23th | v3 (v2023.03.01) |
| Mar 7, 2023 | 5.64% (0.05640) | 92.07th | 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 (17)
- http://developer.pidgin.im/viewmtn/revision/diff/bc79b1bf09dcfa1d8edac86a06761fce7416e69c/with/757272a78a8ca6027d518e614712c3399e34dda3/libpurple/protocols/oscar/family_feedbag.c x_refsource_CONFIRM
- http://developer.pidgin.im/viewmtn/revision/info/757272a78a8ca6027d518e614712c3399e34dda3 x_refsource_CONFIRM
- http://pidgin.im/news/security/?id=57 x_refsource_CONFIRMVendor Advisory
- http://secunia.com/advisories/47219 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/47234 third-party-advisoryx_refsource_SECUNIA
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:183 vendor-advisoryx_refsource_MANDRIVA
- http://www.openwall.com/lists/oss-security/2011/12/10/1 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2011/12/10/2 mailing-listx_refsource_MLIST
- http://www.redhat.com/support/errata/RHSA-2011-1820.html vendor-advisoryx_refsource_REDHAT
- http://www.redhat.com/support/errata/RHSA-2011-1821.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/51010 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2011-4601 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=761517 Issue Tracking
- https://hermes.opensuse.org/messages/13195955 vendor-advisoryx_refsource_SUSE
- https://nvd.nist.gov/vuln/detail/CVE-2011-4601
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18408 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2011-4601
Change history (0)
No recorded changes yet.