ArchLinux: 202011-15: libxml2: multiple issues
Summary
- CVE-2019-20388 (denial of service)
A memory leak was found in the xmlSchemaValidateStream function of
libxml2. Applications that use this library may be vulnerable to memory
not being freed leading to a denial of service.
- CVE-2020-7595 (denial of service)
xmlStringLenDecodeEntities in parser.c in libxml2 2.9.10 has an
infinite loop in a certain end-of-file situation.
- CVE-2020-24977 (information disclosure)
GNOME project libxml2 <= 2.9.10 has a global buffer over-read
vulnerability in xmlEncodeEntitiesInternal at libxml2/entities.c.
Resolution
Upgrade to 2.9.10-6.
# pacman -Syu "libxml2>=2.9.10-6"
The problems have been fixed upstream but no release is available yet.
References
https://bugs.archlinux.org/task/68510 https://gitlab.gnome.org/GNOME/libxml2/-/commit/7ffcd44d7e6c46704f8af0321d9314cd26e0e18a https://gitlab.gnome.org/GNOME/libxml2/-/commit/0e1a49c8907645d2e155f0d89d4d9895ac5112b5 https://gitlab.gnome.org/GNOME/libxml2/-/commit/50f06b3efb638efb0abd95dc62dca05ae67882c2 https://security.archlinux.org/CVE-2019-20388 https://security.archlinux.org/CVE-2020-7595 https://security.archlinux.org/CVE-2020-24977
Workaround
None.