VulnerabilityModified
CVE-2020-14311
A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.
MEDIUM 6.0EPSS 0.46%
Does this matter?
Lower severity and a low EPSS score (0.46%). Track it; it rarely justifies an emergency change on its own.
Description
There is an issue with grub2 before version 2.06 while handling symlink on ext filesystems. A filesystem containing a symbolic link with an inode size of UINT32_MAX causes an arithmetic overflow leading to a zero-sized memory allocation with subsequent heap-based buffer overflow.
- CVSS 3.1
- 6.0 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
- EPSS
- 0.46% probability · 39th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-122, CWE-190
- Affected
- gnu/grub2 · redhat/enterprise linux · redhat/enterprise linux eus · redhat/enterprise linux server aus · redhat/enterprise linux server tus · opensuse/leap · canonical/ubuntu linux
- Source
- secalert@redhat.com
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/4Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/21/1Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202104-05Third Party Advisory
- https://usn.ubuntu.com/4432-1/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/2Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/17/4Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/09/21/1Mailing List, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311Issue Tracking, Third Party Advisory
- https://security.gentoo.org/glsa/202104-05Third Party Advisory
- https://usn.ubuntu.com/4432-1/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.