xchat: Heap-based buffer overflow (crash, ACE) via long response string
Published Aug 30, 2012
5.0
MEDIUMCVSS 2.0
EPSS 7.70%
Description
Heap-based buffer overflow in XChat 2.8.9 and earlier allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long response string.
Affected products
No data.
- ≤ 2.8.9
- 1.2.1
- 1.3.9
- 1.3.10
- 1.3.11
- 1.3.12
- 1.3.13
- 1.4
- 1.4.1
- 1.4.2
- 1.4.3
- 1.5.6
- 1.8.0
- 1.8.1
- 1.8.2
- 1.8.3
- 1.8.4
- 1.8.5
- 1.8.6
- 1.8.7
- 1.8.8
- 1.8.9
- 1.9.0
- 1.9.1
- 1.9.2
- 1.9.3
- 1.9.4
- 1.9.5
- 1.9.6
- 1.9.7
- 1.9.8
- 1.9.9
- 2.0.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- 2.0.6
- 2.0.7
- 2.0.8
- 2.6.7
- 2.8.0
- 2.8.1
- 2.8.3
- 2.8.3
- 2.8.3
- 2.8.4
- 2.8.5
- 2.8.5
- 2.8.6
- 2.8.7
- 2.8.7
- 2.8.7
- 2.8.7
- 2.8.7
- 2.8.7
- 2.8.7b
- 2.8.8
No data.
Red Hat Enterprise Linux 5
xchat
Not affected
Red Hat Enterprise Linux 6
xchat
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | xchat | Not affected | n/a |
| Red Hat Enterprise Linux 6 | xchat | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This bug is not a security issue. For detailed explanation, refer to: https://bugzilla.redhat.com/show_bug.cgi?id=853321#c4
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 (20 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.70% (0.07696) | 94.42th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.70% (0.07696) | 93.81th | v5 (v2026.06.15) |
| May 1, 2026 | 31.14% (0.31139) | 96.78th | v4 (v2025.03.14) |
| Oct 7, 2025 | 30.07% (0.30071) | 96.49th | v4 (v2025.03.14) |
| Mar 30, 2025 | 24.05% (0.24054) | 95.58th | v4 (v2025.03.14) |
| Mar 29, 2025 | 35.19% (0.35192) | 95.43th | v4 (v2025.03.14) |
| Mar 17, 2025 | 24.05% (0.24054) | 95.59th | v4 (v2025.03.14) |
| Feb 28, 2025 | 30.56% (0.30565) | 97.04th | v3 (v2023.03.01) |
| Jan 6, 2025 | 55.92% (0.55924) | 97.81th | v3 (v2023.03.01) |
| Dec 17, 2024 | 65.04% (0.65040) | 98.06th | v3 (v2023.03.01) |
| Sep 18, 2024 | 76.50% (0.76501) | 98.23th | v3 (v2023.03.01) |
| Mar 30, 2024 | 81.05% (0.81050) | 98.25th | v3 (v2023.03.01) |
| Jan 26, 2024 | 84.55% (0.84549) | 98.24th | v3 (v2023.03.01) |
| Mar 7, 2023 | 84.95% (0.84946) | 97.89th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.21% (0.06211) | 90.72th | v2 (v2022.01.01) |
| Feb 14, 2023 | 6.21% (0.06211) | 90.40th | v2 (v2022.01.01) |
| Nov 14, 2022 | 6.95% (0.06953) | 92.02th | v2 (v2022.01.01) |
| Aug 13, 2022 | 8.22% (0.08225) | 93.03th | v2 (v2022.01.01) |
| Apr 1, 2022 | 9.89% (0.09893) | 93.88th | v2 (v2022.01.01) |
| Feb 4, 2022 | 9.89% (0.09893) | 87.37th | v2 (v2022.01.01) |
References (9)
- http://packetstormsecurity.org/files/107312/xchat-dos.txt x_refsource_MISCExploit
- http://www.exploit-db.com/exploits/18159 exploitx_refsource_EXPLOIT-DB
- http://www.osvdb.org/77629 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/bid/50820 vdb-entryx_refsource_BIDExploit
- http://www.securitytracker.com/id?1027468 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/security/cve/CVE-2011-5129 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=853321 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2011-5129
- https://www.cve.org/CVERecord?id=CVE-2011-5129
| Link | Providers | Tags |
|---|---|---|
| http://packetstormsecurity.org/files/107312/xchat-dos.txt | x_refsource_MISCExploit | |
| http://www.exploit-db.com/exploits/18159 | exploitx_refsource_EXPLOIT-DB | |
| http://www.osvdb.org/77629 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/bid/50820 | vdb-entryx_refsource_BIDExploit | |
| http://www.securitytracker.com/id?1027468 | vdb-entryx_refsource_SECTRACK | |
| https://access.redhat.com/security/cve/CVE-2011-5129 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=853321 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-5129 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-5129 |
Change history (0)
No recorded changes yet.