A flaw was found in nginx. An off-by-one error while processing DNS responses allows a network attacker to write a dot character out of bounds in a heap allocated buffer which can allow overwriting the least significant byte of next heap chunk metadata likely leading to a remote code execution in certain circumstances. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Platform | Package | Release Date | Advisory |
---|---|---|---|
Amazon Linux 1 | nginx | 2021-06-01 17:58 | ALAS-2021-1507 |
Amazon Linux 2 - Nginx1 Extra | nginx | 2023-08-07 06:17 | ALAS2NGINX1-2023-003 |
Score Type | Score | Vector | |
---|---|---|---|
Amazon Linux | CVSSv3 | 8.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
NVD | CVSSv2 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P |
NVD | CVSSv3 | 7.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L |