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.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Affected products
References
- MISChttps://hackerone.com/reports/1913733
- MISChttps://security.netapp.com/advisory/ntap-20230609-0009/
- VENDOR_ADVISORYhttps://support.apple.com/kb/HT213843
- VENDOR_ADVISORYhttps://support.apple.com/kb/HT213844
- VENDOR_ADVISORYhttps://support.apple.com/kb/HT213845
- MAILING_LISThttp://seclists.org/fulldisclosure/2023/Jul/52
- MAILING_LISThttp://seclists.org/fulldisclosure/2023/Jul/48
- MAILING_LISThttp://seclists.org/fulldisclosure/2023/Jul/47
- MISChttps://security.gentoo.org/glsa/202310-12
Updated 16m ago · 8 sources