The compress_add_dlabel_points function in dns/Compress.c in MaraDNS 1.4.03, 1.4.05, and probably other versions allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a long DNS hostname with a large number of labels, which triggers a heap-based buffer overflow
Published Jan 28, 2011
7.5
HIGHCVSS 2.0
EPSS 5.17%
Description
The compress_add_dlabel_points function in dns/Compress.c in MaraDNS 1.4.03, 1.4.05, and probably other versions allows remote attackers to cause a denial of service (segmentation fault) and possibly execute arbitrary code via a long DNS hostname with a large number of labels, which triggers a heap-based buffer overflow.
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:L/Au:N/C:P/I:P/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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.17% (0.05169) | 92.18th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.17% (0.05169) | 91.34th | v5 (v2026.06.15) |
| Jul 30, 2025 | 6.84% (0.06838) | 90.95th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.36% (0.05363) | 89.38th | v4 (v2025.03.14) |
| Dec 12, 2024 | 13.07% (0.13066) | 95.75th | v3 (v2023.03.01) |
| Sep 18, 2023 | 13.07% (0.13066) | 94.86th | v3 (v2023.03.01) |
| Jul 29, 2023 | 11.40% (0.11396) | 94.45th | v3 (v2023.03.01) |
| Mar 7, 2023 | 10.13% (0.10128) | 93.96th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.54% (0.07544) | 92.83th | v2 (v2022.01.01) |
| Apr 1, 2022 | 7.54% (0.07544) | 92.13th | v2 (v2022.01.01) |
| Feb 4, 2022 | 7.54% (0.07544) | 81.06th | v2 (v2022.01.01) |
References (10)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834 x_refsource_CONFIRM
- http://osvdb.org/70630 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/43027 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/43107 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2011/dsa-2196 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2011/01/24/1 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2011/01/24/6 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/45966 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2011/0699 vdb-entryx_refsource_VUPEN
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64885 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=610834 | x_refsource_CONFIRM | |
| http://osvdb.org/70630 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/43027 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/43107 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.debian.org/security/2011/dsa-2196 | vendor-advisoryx_refsource_DEBIAN | |
| http://www.openwall.com/lists/oss-security/2011/01/24/1 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2011/01/24/6 | mailing-listx_refsource_MLIST | |
| http://www.securityfocus.com/bid/45966 | vdb-entryx_refsource_BID | |
| http://www.vupen.com/english/advisories/2011/0699 | vdb-entryx_refsource_VUPEN | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/64885 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.