CVE-2023-38546 (GCVE-0-2023-38546)
Vulnerability from cvelistv5
Published
2023-10-18 03:51
Modified
2025-11-04 19:17
Severity ?
Summary
This flaw allows an attacker to insert cookies at will into a running program using libcurl, if the specific series of conditions are met. libcurl performs transfers. In its API, an application creates "easy handles" that are the individual handles for single transfers. libcurl provides a function call that duplicates en easy handle called [curl_easy_duphandle](https://curl.se/libcurl/c/curl_easy_duphandle.html). If a transfer has cookies enabled when the handle is duplicated, the cookie-enable state is also cloned - but without cloning the actual cookies. If the source handle did not read any cookies from a specific file on disk, the cloned version of the handle would instead store the file name as `none` (using the four ASCII letters, no quotes). Subsequent use of the cloned handle that does not explicitly set a source to load cookies from would then inadvertently load cookies from a file named `none` - if such a file exists and is readable in the current directory of the program using libcurl. And if using the correct file format of course.
References
support@hackerone.com http://seclists.org/fulldisclosure/2024/Jan/34
support@hackerone.com http://seclists.org/fulldisclosure/2024/Jan/37
support@hackerone.com http://seclists.org/fulldisclosure/2024/Jan/38
support@hackerone.com https://curl.se/docs/CVE-2023-38546.html Patch, Third Party Advisory
support@hackerone.com https://forum.vmssoftware.com/viewtopic.php?f=8&t=8868
support@hackerone.com https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OGMXNRNSJ4ETDK6FRNU3J7SABXPWCHSQ/
support@hackerone.com https://support.apple.com/kb/HT214036
support@hackerone.com https://support.apple.com/kb/HT214057
support@hackerone.com https://support.apple.com/kb/HT214058
support@hackerone.com https://support.apple.com/kb/HT214063
af854a3a-2127-422b-91ae-364da2661108 http://seclists.org/fulldisclosure/2024/Jan/34
af854a3a-2127-422b-91ae-364da2661108 http://seclists.org/fulldisclosure/2024/Jan/37
af854a3a-2127-422b-91ae-364da2661108 http://seclists.org/fulldisclosure/2024/Jan/38
af854a3a-2127-422b-91ae-364da2661108 https://curl.se/docs/CVE-2023-38546.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://forum.vmssoftware.com/viewtopic.php?f=8&t=8868
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2023/10/msg00016.html
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OGMXNRNSJ4ETDK6FRNU3J7SABXPWCHSQ/
af854a3a-2127-422b-91ae-364da2661108 https://support.apple.com/kb/HT214036
af854a3a-2127-422b-91ae-364da2661108 https://support.apple.com/kb/HT214057
af854a3a-2127-422b-91ae-364da2661108 https://support.apple.com/kb/HT214058
af854a3a-2127-422b-91ae-364da2661108 https://support.apple.com/kb/HT214063
Impacted products
Vendor Product Version
curl curl Version: 8.4.0   ≤
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