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Public proof of conceptFix available

CVE-2022-43358

A public proof of concept exists; no exploitation attested.

  • Published2023-08-22
  • Fixed in3.6.5
  • WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

Stack overflow vulnerability in ast_selectors.cpp: in function Sass::ComplexSelector::has_placeholder in libsass:3.6.5-8-g210218, which can be exploited by attackers to cause a denial of service (DoS).

Timeline

dates in UTC
  1. 2023-08-2219:16CVE publishedNVD

Versions per branch

OSV · NVD
sass
BranchAffectedFixed in
3.6≥ 3.6.5-8-g210218, < 3.6.53.6.5
Sass-lang libsass
BranchAffectedFixed in
3.6= 3.6.5-8-g210218no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libsassUbuntu:Pro:18.04:LTSall versions · no fixed version listed
  • libsassUbuntu:22.04:LTSall versions · no fixed version listed
  • libsassUbuntu:20.04:LTSall versions · no fixed version listed
  • libsassUbuntu:16.04:LTSall versions · no fixed version listed
  • libsassSUSE:Linux Enterprise Module for Package Hub 15 SP5all versions · fixed in 3.6.5-150200.4.10.1
  • libsassSUSE:Linux Enterprise Module for Package Hub 15 SP4all versions · fixed in 3.6.5-150200.4.10.1
  • libsassopenSUSE:Tumbleweedall versions · fixed in 3.6.5-2.1
  • libsassopenSUSE:Leap 15.5all versions · fixed in 3.6.5-150200.4.10.1

20 more package ranges on OSV.dev

Vendor advisories

  • CVE-2022-43358 Red Hat Product Security

    libsass: stack overflow in Sass::ComplexSelector::has_placeholder() in ast_selectors.cpp

Full record on NVD

Fix

  1. Update sass to 3.6.5

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2023-08-22
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-57fv-hr9v-7rfx

Frequently asked questions

What is CVE-2022-43358?

Stack overflow vulnerability in ast_selectors.cpp: in function Sass::ComplexSelector::has_placeholder in libsass:3.6.5-8-g210218, which can be exploited by attackers to cause a denial of service (DoS).

Is CVE-2022-43358 actively exploited?

A proof-of-concept exploit exists for CVE-2022-43358, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2022-43358?

CVE-2022-43358 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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