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."
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | squid | 3.5.21-25.1 | SUSE-SU-2017:0128-1 |
| SLES 12 SP1 | squid | 3.3.14-22.6.1 | SUSE-SU-2017:0116-1 |
| SLES 11 SP4 | squid | 2.7.STABLE5-2.12.24.2 | SUSE-SU-2015:1983-1 |
| SLES 11 SP4 | squid3 | 3.1.23-8.16.36.1 | SUSE-SU-2017:0110-1 |
| SLES 11 SP3 | squid | 2.7.STABLE5-2.12.24.2 | SUSE-SU-2015:1983-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | squid | 3.5.21-25.1 | SUSE-SU-2017:0128-1 |
| SLES for SAP 12 SP1 | squid | 3.3.14-22.6.1 | SUSE-SU-2017:0116-1 |
| SLES for SAP 11 SP4 | squid | 2.7.STABLE5-2.12.24.2 | SUSE-SU-2015:1983-1 |
| SLES for SAP 11 SP4 | squid3 | 3.1.23-8.16.36.1 | SUSE-SU-2017:0110-1 |
| SLES for SAP 11 SP3 | squid | 2.7.STABLE5-2.12.24.2 | SUSE-SU-2015:1983-1 |
Advisories 4
- SUSE-SU-2017:0110-1 Security update for squid3 SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0128-1 Security update for squid SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2015:1983-1 Security update for squid SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:0116-1 Security update for squid SUSE / openSUSE Security Updates · Feb 4, 2026
References
- [oss-security] 20151001 CVE Request: squid: Nonce replay vulnerability in Digest authentication mailing-list
- http://bugs.squid-cache.org/show_bug.cgi?id=4066
- [oss-security] 20151011 Re: CVE Request: squid: Nonce replay vulnerability in Digest authentication mailing-list
- openSUSE-SU-2015:1835 vendor-advisory
- [oss-security] 20151012 Re: Re: CVE Request: squid: Nonce replay vulnerability in Digest authentication mailing-list