Aspell is vulnerable to denial of service attack. The attack exists because the acommon::unescape
function in common/getdata.cpp
does not properly handle the \\
character, leading to a stack- based buffer overflow when src
data contains the character.
bugs.chromium.org/p/oss-fuzz/issues/detail?id=16109
github.com/coapp-packages/aspell/blob/d50cd451286c1c466f05cfb4c53d39bcfcbd07e5/common/getdata.cpp#L67
github.com/GNUAspell/aspell/commit/80fa26c74279fced8d778351cff19d1d8f44fe4e
github.com/GNUAspell/aspell/compare/rel-0.60.7...rel-0.60.8
lists.debian.org/debian-lts-announce/2019/10/msg00027.html
lists.debian.org/debian-lts-announce/2021/07/msg00021.html
usn.ubuntu.com/4155-1/
usn.ubuntu.com/4155-2/
www.debian.org/security/2021/dsa-4948