Arch Linux Security Advisory ASA-201705-7

Severity: High
Date : 2017-05-09
CVE-ID : CVE-2017-8105 CVE-2017-8287
Package : freetype2
Type : arbitrary code execution
Remote : Yes
Link : https://security.archlinux.org/AVG-257

Summary

The package freetype2 before version 2.7.1-2 is vulnerable to arbitrary
code execution.

Resolution

Upgrade to 2.7.1-2.

pacman -Syu “freetype2>=2.7.1-2”

The problems have been fixed upstream but no release is available yet.

Workaround

None.

Description

• CVE-2017-8105 (arbitrary code execution)

FreeType 2 <= 2.7.1 has an out-of-bounds write caused by a heap-based
buffer overflow related to the t1_decoder_parse_charstrings function in
psaux/t1decode.c.

• CVE-2017-8287 (arbitrary code execution)

FreeType 2 <= 2.7.1 has an out-of-bounds write caused by a heap-based
buffer overflow related to the t1_builder_close_contour function in
psaux/psobjs.c.

Impact

A remote attacker can execute arbitrary code on the affected host via a
crafted font.

References

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=941
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=935
https://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=f958c48ee431bef8d4d466b40c9cb2d4dbcb7791
https://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=3774fc08b502c3e685afca098b6e8a195aded6a0
https://security.archlinux.org/CVE-2017-8105
https://security.archlinux.org/CVE-2017-8287