CVE-2023-28319

CVSS 7.5 HIGHEPSS 2.5%CWE-416

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.5EPSS 2.5%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

26 May 2023Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

A use after free vulnerability exists in curl <v8.1.0 in the way libcurl offers a feature to verify an SSH server's public key using a SHA 256 hash. When this check fails, libcurl would free the memory for the fingerprint before it returns an error message containing the (now freed) hash. This flaw risks inserting sensitive heap-based data into the error message that might be shown to users or otherwise get leaked and revealed.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

n/a · https://github.com/curl/curl

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References

http://seclists.org/fulldisclosure/2023/Jul/47 http://seclists.org/fulldisclosure/2023/Jul/48 http://seclists.org/fulldisclosure/2023/Jul/52 https://hackerone.com/reports/1913733 https://security.gentoo.org/glsa/202310-12 https://security.netapp.com/advisory/ntap-20230609-0009/https://support.apple.com/kb/HT213843 https://support.apple.com/kb/HT213844 https://support.apple.com/kb/HT213845