Description
curl can be told to parse a `.netrc` file for credentials. If that file endsin a line with 4095 consecutive non-white space letters and no newline, curlwould first read past the end of the stack-based buffer, and if the readworks, write a zero byte beyond its boundary.This will in most cases cause a segfault or similar, but circumstances might also cause different outcomes.If a malicious user can provide a custom netrc file to an application or otherwise affect its contents, this flaw could be used as denial-of-service.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected products
References
- MISChttps://hackerone.com/reports/1721098
- MISChttps://security.gentoo.org/glsa/202212-01
- MISChttps://security.netapp.com/advisory/ntap-20230110-0006/
- VENDOR_ADVISORYhttps://support.apple.com/kb/HT213604
- VENDOR_ADVISORYhttps://support.apple.com/kb/HT213605
- MAILING_LISThttp://seclists.org/fulldisclosure/2023/Jan/20
- MAILING_LISThttp://seclists.org/fulldisclosure/2023/Jan/19
Updated 44m ago · 8 sources