High severity7.5NVD Advisory· Published Apr 8, 2021· Updated Jun 17, 2026
CVE-2021-1252
CVE-2021-1252
Description
A vulnerability in the Excel XLM macro parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper error handling that may result in an infinite loop. An attacker could exploit this vulnerability by sending a crafted Excel file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process hang, resulting in a denial of service condition.
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Affected products
35- Range: 0.103.0, 0.103.1
- osv-coords31 versionspkg:rpm/opensuse/clamav&distro=openSUSE%20Leap%2015.2pkg:rpm/opensuse/clamav&distro=openSUSE%20Tumbleweedpkg:rpm/suse/clamav&distro=HPE%20Helion%20OpenStack%208pkg:rpm/suse/clamav&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Point%20of%20Sale%2011%20SP3pkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%2011%20SP4-LTSSpkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-LTSSpkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/clamav&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/clamav&distro=SUSE%20Manager%20Proxy%204.0pkg:rpm/suse/clamav&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.0pkg:rpm/suse/clamav&distro=SUSE%20Manager%20Server%204.0pkg:rpm/suse/clamav&distro=SUSE%20OpenStack%20Cloud%208pkg:rpm/suse/clamav&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/clamav&distro=SUSE%20OpenStack%20Cloud%20Crowbar%208pkg:rpm/suse/clamav&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209
< 0.103.2-lp152.6.6.1+ 30 more
- (no CPE)range: < 0.103.2-lp152.6.6.1
- (no CPE)range: < 0.103.3-1.4
- (no CPE)range: < 0.103.2-33.35.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-0.20.35.1
- (no CPE)range: < 0.103.2-0.20.35.1
- (no CPE)range: < 0.103.2-33.35.1
- (no CPE)range: < 0.103.2-33.35.1
- (no CPE)range: < 0.103.2-33.35.1
- (no CPE)range: < 0.103.2-33.35.1
- (no CPE)range: < 0.103.2-3.6.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-33.35.1
- (no CPE)range: < 0.103.2-33.35.1
- (no CPE)range: < 0.103.2-3.6.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-3.26.1
- (no CPE)range: < 0.103.2-33.35.1
- (no CPE)range: < 0.103.2-33.35.1
- (no CPE)range: < 0.103.2-33.35.1
- (no CPE)range: < 0.103.2-33.35.1
- Range: 0.103.0
Patches
Vulnerability mechanics
References
1- blog.clamav.net/2021/04/clamav-01032-security-patch-release.htmlnvdRelease NotesVendor Advisory
News mentions
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