squid: Nonce replay vulnerability in Digest authentication
Published Nov 6, 2015
4.0
MEDIUMCVSS 2.0
EPSS 11.44%
Description
Squid 3.4.4 through 3.4.11 and 3.5.0.1 through 3.5.1, when Digest authentication is used, allow remote authenticated users to retain access by leveraging a stale nonce, aka "Nonce replay vulnerability."
Affected products
No data.
Configuration 1
- 3.4.4
- 3.4.5
- 3.4.6
- 3.4.7
- 3.4.8
- 3.4.9
- 3.4.10
- 3.4.11
- 3.4.12
- 3.4.13
- 3.5.0.1
- 3.5.0.2
- 3.5.0.3
- 3.5.0.4
- 3.5.1
No data.
Red Hat Enterprise Linux 5
squid
Will not fix
Red Hat Enterprise Linux 6
squid
Will not fix
Red Hat Enterprise Linux 7
squid
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | squid | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | squid | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | squid | Will not fix | n/a |
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:S/C:N/I:P/A:N
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 11.44% (0.11441) | 95.89th | v5 (v2026.06.15) |
| Jun 15, 2026 | 11.44% (0.11441) | 95.44th | v5 (v2026.06.15) |
| Jul 30, 2025 | 1.08% (0.01077) | 76.88th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.43% (0.02425) | 83.70th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.63% (0.06633) | 84.91th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.43% (0.02425) | 84.04th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.26% (0.00258) | 66.06th | v3 (v2023.03.01) |
| May 3, 2024 | 0.26% (0.00258) | 65.38th | v3 (v2023.03.01) |
| Nov 1, 2023 | 0.26% (0.00258) | 63.37th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.18% (0.00182) | 53.65th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.13% (0.01132) | 56.11th | v2 (v2022.01.01) |
| Sep 22, 2022 | 1.13% (0.01132) | 54.59th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.13% (0.01132) | 52.58th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.13% (0.01132) | 30.65th | v2 (v2022.01.01) |
References (9)
- http://bugs.squid-cache.org/show_bug.cgi?id=4066 x_refsource_CONFIRM
- http://lists.opensuse.org/opensuse-updates/2015-10/msg00052.html vendor-advisoryx_refsource_SUSE
- http://www.openwall.com/lists/oss-security/2015/10/01/1 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2015/10/11/4 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2015/10/12/2 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2014-9749 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1186768 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2014-9749
- https://www.cve.org/CVERecord?id=CVE-2014-9749
| Link | Providers | Tags |
|---|---|---|
| http://bugs.squid-cache.org/show_bug.cgi?id=4066 | x_refsource_CONFIRM | |
| http://lists.opensuse.org/opensuse-updates/2015-10/msg00052.html | vendor-advisoryx_refsource_SUSE | |
| http://www.openwall.com/lists/oss-security/2015/10/01/1 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2015/10/11/4 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2015/10/12/2 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2014-9749 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1186768 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2014-9749 | ||
| https://www.cve.org/CVERecord?id=CVE-2014-9749 |
Change history (0)
No recorded changes yet.