The squidclamav_check_preview_handler function in squidclamav.c in SquidClamav 5.x before 5.8 and 6.x before 6.7 passes an unescaped URL to a system command call, which allows remote attackers to cause a denial of service (daemon crash) via a URL with certain characters, as demonstrated using %0D or %0A
Published Aug 25, 2012
5.0
MEDIUMCVSS 2.0
EPSS 3.33%
Description
The squidclamav_check_preview_handler function in squidclamav.c in SquidClamav 5.x before 5.8 and 6.x before 6.7 passes an unescaped URL to a system command call, which allows remote attackers to cause a denial of service (daemon crash) via a URL with certain characters, as demonstrated using %0D or %0A.
Affected products
No data.
- 5.0
- 5.1
- 5.2
- 5.3
- 5.4
- 5.5
- 5.6
- 5.7
- 6.0
- 6.1
- 6.2
- 6.3
- 6.4
- 6.5
- 6.6
No data.
No Red Hat product state for this CVE.
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 (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.33% (0.03333) | 88.23th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.33% (0.03333) | 87.01th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.29% (0.02290) | 83.25th | v4 (v2025.03.14) |
| Mar 29, 2025 | 3.70% (0.03702) | 79.66th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.29% (0.02290) | 83.56th | v4 (v2025.03.14) |
| Dec 12, 2024 | 5.63% (0.05630) | 93.57th | v3 (v2023.03.01) |
| Sep 17, 2024 | 5.63% (0.05630) | 93.44th | v3 (v2023.03.01) |
| May 24, 2024 | 2.09% (0.02086) | 89.06th | v3 (v2023.03.01) |
| May 10, 2024 | 1.74% (0.01744) | 87.86th | v3 (v2023.03.01) |
| Apr 25, 2024 | 1.46% (0.01457) | 86.50th | v3 (v2023.03.01) |
| Mar 15, 2024 | 1.26% (0.01263) | 85.29th | v3 (v2023.03.01) |
| Feb 8, 2024 | 1.06% (0.01063) | 83.70th | v3 (v2023.03.01) |
| May 13, 2023 | 5.63% (0.05630) | 92.09th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.80% (0.04803) | 91.43th | 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) |
References (9)
- http://freecode.com/projects/squidclamav/releases/346722 x_refsource_CONFIRM
- http://secunia.com/advisories/49057 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://squidclamav.darold.net/news.html x_refsource_CONFIRMVendor Advisory
- http://www.openwall.com/lists/oss-security/2012/08/16/2 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2012/08/16/4 mailing-listx_refsource_MLIST
- http://www.osvdb.org/84138 vdb-entryx_refsource_OSVDB
- http://www.securityfocus.com/bid/54663 vdb-entryx_refsource_BID
- https://bugs.gentoo.org/show_bug.cgi?id=428778 x_refsource_MISC
- https://github.com/darold/squidclamav/commit/80f74451f628264d1d9a1f1c0bbcebc932ba5e00 x_refsource_CONFIRMExploitPatch
| Link | Providers | Tags |
|---|---|---|
| http://freecode.com/projects/squidclamav/releases/346722 | x_refsource_CONFIRM | |
| http://secunia.com/advisories/49057 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://squidclamav.darold.net/news.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.openwall.com/lists/oss-security/2012/08/16/2 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2012/08/16/4 | mailing-listx_refsource_MLIST | |
| http://www.osvdb.org/84138 | vdb-entryx_refsource_OSVDB | |
| http://www.securityfocus.com/bid/54663 | vdb-entryx_refsource_BID | |
| https://bugs.gentoo.org/show_bug.cgi?id=428778 | x_refsource_MISC | |
| https://github.com/darold/squidclamav/commit/80f74451f628264d1d9a1f1c0bbcebc932ba5e00 | x_refsource_CONFIRMExploitPatch |
Change history (0)
No recorded changes yet.