CVE-2023-23916 An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the “chained” HTTP compression algorithms meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable “links” in this “decompression chain” wascapped but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a “malloc bomb” making curl end up spending enormous amounts of allocated heap memory or trying to and returning out of memory errors.

Information published. Continue reading CVE-2023-23916 An allocation of resources without limits or throttling vulnerability exists in curl <v7.88.0 based on the “chained” HTTP compression algorithms meaning that a server response can be compressed multiple times and potentially with differentalgorithms. The number of acceptable “links” in this “decompression chain” wascapped but the cap was implemented on a per-header basis allowing a maliciousserver to insert a virtually unlimited number of compression steps simply byusing many headers. The use of such a decompression chain could result in a “malloc bomb” making curl end up spending enormous amounts of allocated heap memory or trying to and returning out of memory errors.

CVE-2023-45322 libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor’s position is “I don’t think these issues are critical enough to warrant a CVE ID … because an attacker typically can’t control when memory allocations fail.”

Information published. Continue reading CVE-2023-45322 libxml2 through 2.11.5 has a use-after-free that can only occur after a certain memory allocation fails. This occurs in xmlUnlinkNode in tree.c. NOTE: the vendor’s position is “I don’t think these issues are critical enough to warrant a CVE ID … because an attacker typically can’t control when memory allocations fail.”