CVE-2020-14058
published 2020-06-30CVE-2020-14058: An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation…
PriorityP338high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
2.61%
83.5th percentile
An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation helper are vulnerable to a Denial of Service when opening a TLS connection to an attacker-controlled server for HTTPS. This occurs because unrecognized error values are mapped to NULL, but later code expects that each error value is mapped to a valid error string.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | squid | < squid 4.12-1 (bookworm) | squid 4.12-1 (bookworm) |
| fedoraproject | fedora | — | — |
| squid-cache | squid | 3.1 – 3.5.28 | — |
| squid-cache | squid | >= 4.0 < 4.12 | 4.12 |
| squid-cache | squid | >= 5.0 < 5.0.3 | 5.0.3 |
| squid | squid | >= 0 < 4.12-1 | 4.12-1 |
| squid | squid | >= 0 < 4.12-1 | 4.12-1 |
| squid | squid | >= 0 < 4.12-1 | 4.12-1 |
| squid | squid | >= 0 < 4.12-1 | 4.12-1 |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5LOW
vendor_redhat7.5HIGH
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Red Hat
squid: DoS in TLS handshake
vendor_redhat·2020-06-19·CVSS 7.5
CVE-2020-14058 [HIGH] CWE-676 squid: DoS in TLS handshake
squid: DoS in TLS handshake
An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation helper are vulnerable to a Denial of Service when opening a TLS connection to an attacker-controlled server for HTTPS. This occurs because unrecognized error values are mapped to NULL, but later code expects that each error value is mapped to a valid error string.
A flaw was found in squid. A denial-of-service attack while processing TLS certificates is possible due to use of a potentially dangerous function in Squid and the default certificate validation helper. The highest threat from this vulnerability is to system availability.
Package: squid (Red Hat Enterprise Linux 5) - Not affected
Package: sq
Debian
CVE-2020-14058: squid - An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of...
vendor_debian·2020·CVSS 7.5
CVE-2020-14058 [HIGH] CVE-2020-14058: squid - An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of...
An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation helper are vulnerable to a Denial of Service when opening a TLS connection to an attacker-controlled server for HTTPS. This occurs because unrecognized error values are mapped to NULL, but later code expects that each error value is mapped to a valid error string.
Scope: local
bookworm: resolved (fixed in 4.12-1)
bullseye: resolved (fixed in 4.12-1)
forky: resolved (fixed in 4.12-1)
sid: resolved (fixed in 4.12-1)
trixie: resolved (fixed in 4.12-1)
OSV
CVE-2020-14058: An issue was discovered in Squid before 4
osv·2020-06-30·CVSS 7.5
CVE-2020-14058 [HIGH] CVE-2020-14058: An issue was discovered in Squid before 4
An issue was discovered in Squid before 4.12 and 5.x before 5.0.3. Due to use of a potentially dangerous function, Squid and the default certificate validation helper are vulnerable to a Denial of Service when opening a TLS connection to an attacker-controlled server for HTTPS. This occurs because unrecognized error values are mapped to NULL, but later code expects that each error value is mapped to a valid error string.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2020-14058 squid: DoS in TLS handshake [fedora-all]
bugzilla·2020-06-30·CVSS 7.5
CVE-2020-14058 [HIGH] CVE-2020-14058 squid: DoS in TLS handshake [fedora-all]
CVE-2020-14058 squid: DoS in TLS handshake [fedora-all]
This is an automatically created tracking bug! It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.
For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks" field.
For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs
When submitting as an update, use the fedpkg template provided in the next
comment(s). This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.
Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.
NOTE: this issue affects multiple supported versions of Fedora. While only
Bugzilla
CVE-2020-14058 squid: DoS in TLS handshake
bugzilla·2020-06-30·CVSS 7.5
CVE-2020-14058 [HIGH] CVE-2020-14058 squid: DoS in TLS handshake
CVE-2020-14058 squid: DoS in TLS handshake
Due to use of a potentially dangerous function Squid and the default certificate validation helper are vulnerable to a Denial of Service attack when processing TLS certificates.
Reference:
https://github.com/squid-cache/squid/security/advisories/GHSA-qvf6-485q-vm57
Discussion:
Created squid tracking bugs for this issue:
Affects: fedora-all [bug 1852555]
---
Upstream patches:
Squid 4:
http://www.squid-cache.org/Versions/v4/changesets/squid-4-93f5fda134a2a010b84ffedbe833d670e63ba4be.patch
Squid 5:
http://www.squid-cache.org/Versions/v5/changesets/squid-5-c6d1a4f6a2cbebceebc8a3fcd8f539ceb7b7f723.patch
---
External References:
https://github.com/squid-cache/squid/security/advisories/GHSA-qvf6-485q-vm57
---
This bug is now closed. Further
http://www.squid-cache.org/Advisories/SQUID-2020_6.txthttp://www.squid-cache.org/Versions/v4/changesets/squid-4-93f5fda134a2a010b84ffedbe833d670e63ba4be.patchhttp://www.squid-cache.org/Versions/v5/changesets/squid-5-c6d1a4f6a2cbebceebc8a3fcd8f539ceb7b7f723.patchhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/https://security.netapp.com/advisory/ntap-20210312-0001/http://www.squid-cache.org/Advisories/SQUID-2020_6.txthttp://www.squid-cache.org/Versions/v4/changesets/squid-4-93f5fda134a2a010b84ffedbe833d670e63ba4be.patchhttp://www.squid-cache.org/Versions/v5/changesets/squid-5-c6d1a4f6a2cbebceebc8a3fcd8f539ceb7b7f723.patchhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3RG5FGSTCAYVIJPJHIY3MRZ7NFT6HDO7/https://security.netapp.com/advisory/ntap-20210312-0001/
2020-06-30
Published