squid: buffer-over-read in SSPI and SMB authentication
Published Dec 25, 2022
8.6
HIGHCVSS 3.1
EPSS 2.84%
Description
A buffer over-read was discovered in libntlmauth in Squid 2.5 through 5.6. Due to incorrect integer-overflow protection, the SSPI and SMB authentication helpers are vulnerable to reading unintended memory locations. In some configurations, cleartext credentials from these locations are sent to a client. This is fixed in 5.7.
Affected products
No data.
- ≥ 2.5 · < 5.7
No data.
Red Hat Enterprise Linux 7
squid-7:3.5.20-17.el7_9.8
Fixed · RHSA-2022:6815
Red Hat Enterprise Linux 8
squid:4-8060020220928033422.ad008a3a
Fixed · RHSA-2022:6775
Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions
squid:4-8010020220928161558.c27ad7f8
Fixed · RHSA-2022:6774
Red Hat Enterprise Linux 8.2 Extended Update Support
squid:4-8020020220928160856.4cda2c84
Fixed · RHSA-2022:6777
Red Hat Enterprise Linux 8.4 Extended Update Support
squid:4-8040020220928034758.522a0ee4
Fixed · RHSA-2022:6776
Red Hat Enterprise Linux 9
squid-7:5.2-1.el9_0.2
Fixed · RHSA-2022:6839
Red Hat Enterprise Linux 6
squid
Out of support scope
Red Hat Enterprise Linux 6
squid34
Out of support scope
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | squid-7:3.5.20-17.el7_9.8 | Fixed | RHSA-2022:6815 |
| Red Hat Enterprise Linux 8 | squid:4-8060020220928033422.ad008a3a | Fixed | RHSA-2022:6775 |
| Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions | squid:4-8010020220928161558.c27ad7f8 | Fixed | RHSA-2022:6774 |
| Red Hat Enterprise Linux 8.2 Extended Update Support | squid:4-8020020220928160856.4cda2c84 | Fixed | RHSA-2022:6777 |
| Red Hat Enterprise Linux 8.4 Extended Update Support | squid:4-8040020220928034758.522a0ee4 | Fixed | RHSA-2022:6776 |
| Red Hat Enterprise Linux 9 | squid-7:5.2-1.el9_0.2 | Fixed | RHSA-2022:6839 |
| Red Hat Enterprise Linux 6 | squid | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | squid34 | Out of support scope | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
Disable use of the vulnerable authentication scheme.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Apr 14, 2025 · SSVC 2.0.3
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 | 2.84% (0.02843) | 86.19th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.84% (0.02843) | 84.79th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.10% (0.00100) | 25.45th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.10% (0.00097) | 42.27th | v3 (v2023.03.01) |
| Jun 6, 2024 | 0.10% (0.00099) | 41.20th | v3 (v2023.03.01) |
| Jan 27, 2024 | 0.09% (0.00091) | 38.41th | v3 (v2023.03.01) |
| Jan 1, 2024 | 0.08% (0.00084) | 35.10th | v3 (v2023.03.01) |
| Nov 25, 2023 | 0.07% (0.00072) | 30.26th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.08% (0.00084) | 34.78th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.08% (0.00080) | 32.61th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Jan 5, 2023 | 1.02% (0.01018) | 39.72th | v2 (v2022.01.01) |
| Dec 26, 2022 | 0.95% (0.00950) | 31.65th | v2 (v2022.01.01) |
References (8)
- http://www.squid-cache.org/Versions/v4/changesets/SQUID-2022_2.patch PatchThird Party Advisory
- http://www.squid-cache.org/Versions/v5/changesets/SQUID-2022_2.patch PatchThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2022-41318 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2129771 Issue Tracking
- https://github.com/squid-cache/squid/security/advisories/GHSA-394c-rr7q-6g78 PatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2022-41318
- https://www.cve.org/CVERecord?id=CVE-2022-41318
- https://www.openwall.com/lists/oss-security/2022/09/23/2 Mailing ListPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.squid-cache.org/Versions/v4/changesets/SQUID-2022_2.patch | PatchThird Party Advisory | |
| http://www.squid-cache.org/Versions/v5/changesets/SQUID-2022_2.patch | PatchThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2022-41318 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2129771 | Issue Tracking | |
| https://github.com/squid-cache/squid/security/advisories/GHSA-394c-rr7q-6g78 | PatchThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2022-41318 | ||
| https://www.cve.org/CVERecord?id=CVE-2022-41318 | ||
| https://www.openwall.com/lists/oss-security/2022/09/23/2 | Mailing ListPatchThird Party Advisory |
Change history (0)
No recorded changes yet.