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.
The product reads data past the end, or before the beginning, of the intended buffer.
The product writes data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://hackerone.com/reports/1721098 | exploit third party advisory patch |
| https://security.gentoo.org/glsa/202212-01 | third party advisory vendor advisory |
| https://security.netapp.com/advisory/ntap-20230110-0006/ | third party advisory |
| https://support.apple.com/kb/HT213604 | third party advisory |
| https://support.apple.com/kb/HT213605 | third party advisory |
| http://seclists.org/fulldisclosure/2023/Jan/20 | third party advisory mailing list |
| http://seclists.org/fulldisclosure/2023/Jan/19 | third party advisory mailing list |