Unrated severityNVD Advisory· Published Jun 10, 2021· Updated Aug 4, 2024
CVE-2021-34557
CVE-2021-34557
Description
XScreenSaver 5.45 can be bypassed if the machine has more than ten disconnectable video outputs. A buffer overflow in update_screen_layout() allows an attacker to bypass the standard screen lock authentication mechanism by crashing XScreenSaver. The attacker must physically disconnect many video outputs.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6- XScreenSaver/XScreenSaverdescription
- Range: =5.45
- osv-coords4 versionspkg:rpm/opensuse/xscreensaver&distro=openSUSE%20Leap%2015.3pkg:rpm/suse/xscreensaver&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/xscreensaver&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/xscreensaver&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5
< 5.44-150000.5.6.1+ 3 more
- (no CPE)range: < 5.44-150000.5.6.1
- (no CPE)range: < 5.44-150000.5.6.1
- (no CPE)range: < 5.22-8.3.1
- (no CPE)range: < 5.22-8.3.1
Patches
Vulnerability mechanics
References
7- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TC4QB7TRS4GS7LDXQQ4PC6J3LVFJYISV/mitrevendor-advisoryx_refsource_FEDORA
- www.openwall.com/lists/oss-security/2021/06/11/1mitremailing-listx_refsource_MLIST
- www.openwall.com/lists/oss-security/2021/07/06/2mitremailing-listx_refsource_MLIST
- github.com/QubesOS/qubes-issues/issues/6595mitrex_refsource_MISC
- github.com/QubesOS/qubes-secpack/blob/master/QSBs/qsb-068-2021.txtmitrex_refsource_MISC
- github.com/QubesOS/qubes-xscreensaver/blob/master/0001-Fix-updating-outputs-info.patchmitrex_refsource_MISC
- www.openwall.com/lists/oss-security/2021/06/05/1mitrex_refsource_MISC
News mentions
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