Unrated severityNVD Advisory· Published Aug 3, 2021· Updated Aug 4, 2024
CVE-2021-36159
CVE-2021-36159
Description
libfetch before 2021-07-26, as used in apk-tools, xbps, and other products, mishandles numeric strings for the FTP and HTTP protocols. The FTP passive mode implementation allows an out-of-bounds read because strtol is used to parse the relevant numbers into address bytes. It does not check if the line ends prematurely. If it does, the for-loop condition checks for the '\0' terminator one byte too late.
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Affected products
2- libfetch/libfetchdescription
Patches
Vulnerability mechanics
References
6- github.com/freebsd/freebsd-src/commits/main/lib/libfetchmitrex_refsource_MISC
- gitlab.alpinelinux.org/alpine/apk-tools/-/issues/10749mitrex_refsource_MISC
- lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cdev.kafka.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/r61db8e7dcb56dc000a5387a88f7a473bacec5ee01b9ff3f55308aacc%40%3Cusers.kafka.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cdev.kafka.apache.org%3Emitremailing-listx_refsource_MLIST
- lists.apache.org/thread.html/rbf4ce74b0d1fa9810dec50ba3ace0caeea677af7c27a97111c06ccb7%40%3Cusers.kafka.apache.org%3Emitremailing-listx_refsource_MLIST
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