The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through 20.2, when the configuration option NoticeAuth is enabled, does not properly handle the return code for the Handle_Write function, which allows remote attackers to cause a denial of service (assertion failure and server crash) via unspecified vectors, related to a "notice auth" message not being sent to a new client
Published Oct 1, 2013
4.3
MEDIUMCVSS 2.0
EPSS 2.32%
Description
The (1) Conn_StartLogin and (2) cb_Read_Resolver_Result functions in conn.c in ngIRCd 18 through 20.2, when the configuration option NoticeAuth is enabled, does not properly handle the return code for the Handle_Write function, which allows remote attackers to cause a denial of service (assertion failure and server crash) via unspecified vectors, related to a "notice auth" message not being sent to a new client.
Affected products
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: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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.32% (0.02322) | 82.85th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.32% (0.02322) | 81.18th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.84% (0.00840) | 73.09th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.72% (0.02722) | 90.89th | v3 (v2023.03.01) |
| Sep 17, 2024 | 2.72% (0.02722) | 90.70th | v3 (v2023.03.01) |
| May 24, 2024 | 1.48% (0.01480) | 86.77th | v3 (v2023.03.01) |
| May 10, 2024 | 1.25% (0.01247) | 85.42th | v3 (v2023.03.01) |
| Apr 25, 2024 | 1.06% (0.01057) | 83.89th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.98% (0.00983) | 83.07th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.83% (0.00827) | 81.38th | v3 (v2023.03.01) |
| Nov 8, 2023 | 2.72% (0.02722) | 89.40th | v3 (v2023.03.01) |
| May 14, 2023 | 2.38% (0.02380) | 88.25th | v3 (v2023.03.01) |
| Mar 28, 2023 | 2.69% (0.02688) | 88.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.67% (0.02671) | 88.76th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (7)
- http://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd.git%3Ba=commit%3Bh=309122017ebc6fff039a7cab1b82f632853d82d5 x_refsource_CONFIRM
- http://arthur.barton.de/pipermail/ngircd-ml/2013-August/000645.html mailing-listx_refsource_MLIST
- http://freecode.com/projects/ngircd/releases/357245 x_refsource_CONFIRMPatch
- http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115047.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115077.html vendor-advisoryx_refsource_FEDORA
- http://osvdb.org/96590 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/54567 third-party-advisoryx_refsource_SECUNIAVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd.git%3Ba=commit%3Bh=309122017ebc6fff039a7cab1b82f632853d82d5 | x_refsource_CONFIRM | |
| http://arthur.barton.de/pipermail/ngircd-ml/2013-August/000645.html | mailing-listx_refsource_MLIST | |
| http://freecode.com/projects/ngircd/releases/357245 | x_refsource_CONFIRMPatch | |
| http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115047.html | vendor-advisoryx_refsource_FEDORA | |
| http://lists.fedoraproject.org/pipermail/package-announce/2013-September/115077.html | vendor-advisoryx_refsource_FEDORA | |
| http://osvdb.org/96590 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/54567 | third-party-advisoryx_refsource_SECUNIAVendor Advisory |
Change history (0)
No recorded changes yet.