6

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Gnu ≫ Grub2 Version < 2.06
Redhat ≫ Enterprise Linux Version 7.0
Redhat ≫ Enterprise Linux Version 8.0
Redhat ≫ Enterprise Linux Eus Version 8.1
Redhat ≫ Enterprise Linux Eus Version 8.2
Opensuse ≫ Leap Version 15.1
Opensuse ≫ Leap Version 15.2
Canonical ≫ Ubuntu Linux Version 14.04 SwEdition esm
Canonical ≫ Ubuntu Linux Version 16.04 SwEdition esm
Canonical ≫ Ubuntu Linux Version 18.04 SwEdition lts
Canonical ≫ Ubuntu Linux Version 20.04 SwEdition lts
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.47% 0.366
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 6 0.8 5.2
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
NIST 3.6 3.9 4.9
AV:L/AC:L/Au:N/C:N/I:P/A:P
RedHat 5.7 0.5 5.2
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
CWE-122 Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

CWE-190 Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

http://www.openwall.com/lists/oss-security/2021/09/17/2
Third Party Advisory
Mailing List
http://www.openwall.com/lists/oss-security/2021/09/17/4
Third Party Advisory
Mailing List
http://www.openwall.com/lists/oss-security/2021/09/21/1
Third Party Advisory
Mailing List
https://security.gentoo.org/glsa/202104-05
Third Party Advisory
https://usn.ubuntu.com/4432-1/
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00016.html
Third Party Advisory
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00017.html
Third Party Advisory
Mailing List
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14311
Third Party Advisory
Issue Tracking