curl < 7.84.0 supports "chained" HTTP compression algorithms, meaning that a serverresponse can be compressed multiple times and potentially with different algorithms. The number of acceptable "links" in this "decompression chain" was unbounded, allowing a malicious server to insert a virtually unlimited number of compression steps.The use of such a decompression chain could result in a "malloc bomb", makingcurl end up spending enormous amounts of allocated heap memory, or trying toand returning out of memory errors.
Platform | Package | Release Date | Advisory |
---|---|---|---|
Amazon Linux 1 | curl | 2022-12-01 17:33 | ALAS-2022-1646 |
Amazon Linux 2 - Core | curl | 2022-10-31 19:40 | ALAS2-2022-1875 |
Amazon Linux 2023 | curl | 2023-02-17 20:47 | ALAS2023-2023-083 |
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv3 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
NVD | CVSSv3 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
NVD | CVSSv2 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |