Описание
Security update for libX11
This update for libX11 fixes the following issues:
- Regression in the fix for CVE-2021-31535, causing segfaults for xforms applications like fdesign (bsc#1186643)
This update was imported from the SUSE:SLE-15:Update update project.
Список пакетов
openSUSE Leap 15.2
Ссылки
- E-Mail link for openSUSE-SU-2021:0857-1
- SUSE Security Ratings
- SUSE Bug 1186643
- SUSE CVE CVE-2021-31535 page
Описание
LookupCol.c in X.Org X through X11R7.7 and libX11 before 1.7.1 might allow remote attackers to execute arbitrary code. The libX11 XLookupColor request (intended for server-side color lookup) contains a flaw allowing a client to send color-name requests with a name longer than the maximum size allowed by the protocol (and also longer than the maximum packet size for normal-sized packets). The user-controlled data exceeding the maximum size is then interpreted by the server as additional X protocol requests and executed, e.g., to disable X server authorization completely. For example, if the victim encounters malicious terminal control sequences for color codes, then the attacker may be able to take full control of the running graphical session.
Затронутые продукты
Ссылки
- CVE-2021-31535
- SUSE Bug 1182506
- SUSE Bug 1191879
- SUSE Bug 1205051