Integer underflow in the DecodeGRE function in src/decode.c in Snort 2.6.1.2 allows remote attackers to trigger dereferencing of certain memory locations via crafted GRE packets, which may cause corruption of log files or writing of sensitive information into log files
Published Jan 16, 2007
7.8
HIGHCVSS 2.0
EPSS 2.40%
Description
Integer underflow in the DecodeGRE function in src/decode.c in Snort 2.6.1.2 allows remote attackers to trigger dereferencing of certain memory locations via crafted GRE packets, which may cause corruption of log files or writing of sensitive information into log files.
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:N/I:N/A:C
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.40% (0.02404) | 83.45th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.33% (0.02330) | 81.24th | v5 (v2026.06.15) |
| Mar 17, 2025 | 2.25% (0.02248) | 83.41th | v4 (v2025.03.14) |
| Dec 12, 2024 | 4.96% (0.04960) | 93.13th | v3 (v2023.03.01) |
| Dec 28, 2023 | 4.96% (0.04960) | 92.01th | v3 (v2023.03.01) |
| Nov 20, 2023 | 3.01% (0.03012) | 89.86th | v3 (v2023.03.01) |
| Oct 13, 2023 | 2.30% (0.02297) | 88.42th | v3 (v2023.03.01) |
| Sep 5, 2023 | 2.35% (0.02355) | 88.41th | v3 (v2023.03.01) |
| Jun 20, 2023 | 2.27% (0.02273) | 88.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.12% (0.02121) | 87.41th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.97% (0.01974) | 78.97th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.97% (0.01974) | 77.12th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.97% (0.01974) | 56.20th | v2 (v2022.01.01) |
No CWE recorded.
References (9)
- http://labs.calyptix.com/advisories/CX-2007-01.txt x_refsource_MISC
- http://osvdb.org/32095 vdb-entryx_refsource_OSVDB
- http://osvdb.org/33464 vdb-entryx_refsource_OSVDB
- http://securityreason.com/securityalert/2165 third-party-advisoryx_refsource_SREASON
- http://securitytracker.com/id?1017507 vdb-entryx_refsource_SECTRACK
- http://www.securityfocus.com/archive/1/456598/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/22004 vdb-entryx_refsource_BID
- http://www.snort.org/got_source/source.html x_refsource_CONFIRM
- http://www.vupen.com/english/advisories/2007/0152 vdb-entryx_refsource_VUPEN
| Link | Providers | Tags |
|---|---|---|
| http://labs.calyptix.com/advisories/CX-2007-01.txt | x_refsource_MISC | |
| http://osvdb.org/32095 | vdb-entryx_refsource_OSVDB | |
| http://osvdb.org/33464 | vdb-entryx_refsource_OSVDB | |
| http://securityreason.com/securityalert/2165 | third-party-advisoryx_refsource_SREASON | |
| http://securitytracker.com/id?1017507 | vdb-entryx_refsource_SECTRACK | |
| http://www.securityfocus.com/archive/1/456598/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/bid/22004 | vdb-entryx_refsource_BID | |
| http://www.snort.org/got_source/source.html | x_refsource_CONFIRM | |
| http://www.vupen.com/english/advisories/2007/0152 | vdb-entryx_refsource_VUPEN |
Change history (0)
No recorded changes yet.