Vulnerability Monitor

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CVE-2020-14311

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.

Published

2020-07-31T22:15:11.597

Last Modified

2024-11-21T05:02:58.923

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.7 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:N/I:P/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

4.9

Weaknesses

Type: Primary
CWE-122
CWE-190
Type: Secondary
CWE-190

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnu	grub2	< 2.06	Yes
Operating System	redhat	enterprise_linux	7.0	Yes
Operating System	redhat	enterprise_linux	8.0	Yes
Operating System	redhat	enterprise_linux_eus	8.1	Yes
Operating System	redhat	enterprise_linux_eus	8.2	Yes
Operating System	redhat	enterprise_linux_server_aus	8.2	Yes
Operating System	redhat	enterprise_linux_server_tus	8.2	Yes
Operating System	opensuse	leap	15.1	Yes
Operating System	opensuse	leap	15.2	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	16.04	Yes
Operating System	canonical	ubuntu_linux	18.04	Yes
Operating System	canonical	ubuntu_linux	20.04	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List, Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311 Issue Tracking, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/202104-05 Third Party Advisory ([email protected])
https://usn.ubuntu.com/4432-1/ Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/09/17/2 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/09/17/4 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2021/09/21/1 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202104-05 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4432-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)