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Affected Component
Analysis
curl
Patched
Name
CVE-2023-28319
Description
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.
Published Date
Updated Date
Workaround
-
Advisories
http://seclists.org/fulldisclosure/2023/Jul/47Mailing List
http://seclists.org/fulldisclosure/2023/Jul/48Mailing List
http://seclists.org/fulldisclosure/2023/Jul/52Mailing List
https://security.gentoo.org/glsa/202310-12Third Party Advisory
https://security.netapp.com/advisory/ntap-20230609-0009/Third Party Advisory
https://support.apple.com/kb/HT213843Third Party Advisory
https://support.apple.com/kb/HT213844Third Party Advisory
https://support.apple.com/kb/HT213845Third Party Advisory
http://seclists.org/fulldisclosure/2023/Jul/47Mailing List
http://seclists.org/fulldisclosure/2023/Jul/48Mailing List
http://seclists.org/fulldisclosure/2023/Jul/52Mailing List
https://security.gentoo.org/glsa/202310-12Third Party Advisory
https://security.netapp.com/advisory/ntap-20230609-0009/Third Party Advisory
https://support.apple.com/kb/HT213843Third Party Advisory
https://support.apple.com/kb/HT213844Third Party Advisory
https://support.apple.com/kb/HT213845Third Party Advisory
Analysis#
Vulnerability Ratings#
7.5
CVSSv31
7.5
CVSSv31
NaN
other
Others affected components#
Name
Project
Project Version
Version
Status
buildroot
2025.02.x
8.20.0
Not Affected
buildroot
master
8.21.0
Not Affected
openwrt
master
8.19.0-r2
Not Affected
openwrt
master
8.20.0-r1
Not Affected
openwrt
openwrt-25.12
8.19.0-r2
Not Affected
openwrt
openwrt-25.12
8.14.1-r1
Not Affected
yocto
master
8.20.0
Not Affected
yocto
scarthgap
8.7.1
Not Affected
Resolved with patches#
curl (yocto:kirkstone)
#
Title
Author
Resolve
1
libssh2: free fingerprint better
Daniel Stenberg <daniel@haxx.se>
CVE-2023-28319