VDB
CVE-2020-14311
CVE-2020-14311
PUBLISHED
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.
EPSS 0.03% · 9.6th percentile
Risk Scores
EPSS Score
0.03%
9.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:Pro:14.04:LTS | grub2 | 0, 2.00-19ubuntu2, 2.00-19ubuntu3 |
| Ubuntu:16.04:LTS | grub2 | 2.02~beta2-36ubuntu3.17, 2.02~beta2-32, 2.02~beta2-32ubuntu1 |
| Ubuntu:20.04:LTS | grub2 | 2.04-1ubuntu13, 2.04-1ubuntu18, 0 |
| Ubuntu:16.04:LTS | grub2-unsigned | 2.04-1ubuntu44.1.2, 2.04-1ubuntu44.1, 2.04-1ubuntu44 |
| Ubuntu:16.04:LTS | grub2-signed | 1.66.1, 0, 1.55 |
| Ubuntu:20.04:LTS | grub2-unsigned | 2.04-1ubuntu44.2, 2.04-1ubuntu44, 0 |
| Ubuntu:18.04:LTS | grub2-signed | 1.87, 1.93.14, 0 |
| Ubuntu:Pro:14.04:LTS | grub2-signed | 1.30, 0, 1.22 |
| Ubuntu:20.04:LTS | grub2-signed | 1.128, 1.142, 1.142.1 |
| Ubuntu:18.04:LTS | grub2 | 0, 2.02-2ubuntu8.2, 2.02-2ubuntu8.14 |
| Ubuntu:18.04:LTS | grub2-unsigned | 2.04-1ubuntu44.1.2, 2.04-1ubuntu44, 0 |
Exploit Intelligence
- CVE-2008-5161 OpenSSH 4.7p1 Audit Helper Automates version checking and credential auditing of legacy OpenSSH 4.7p1 (Debian-8ubuntu1) targets by driving Metasploit’s auxiliary/scanner/ssh/ssh_login module from Python via pwntools. (github-poc)
- CVE-2008-5161 OpenSSH 4.7p1 Audit Helper Automates version checking and credential auditing of legacy OpenSSH 4.7p1 (Debian-8ubuntu1) targets by driving Metasploit’s auxiliary/scanner/ssh/ssh_login module from Python via pwntools. (github-poc)
- CVE-2008-5161 OpenSSH 4.7p1 Audit Helper Automates version checking and credential auditing of legacy OpenSSH 4.7p1 (Debian-8ubuntu1) targets by driving Metasploit’s auxiliary/scanner/ssh/ssh_login module from Python via pwntools. (github-poc)
- CVE-2008-5161 OpenSSH 4.7p1 Audit Helper Automates version checking and credential auditing of legacy OpenSSH 4.7p1 (Debian-8ubuntu1) targets by driving Metasploit’s auxiliary/scanner/ssh/ssh_login module from Python via pwntools. (github-poc)
- CVE-2008-5161 OpenSSH 4.7p1 Audit Helper Automates version checking and credential auditing of legacy OpenSSH 4.7p1 (Debian-8ubuntu1) targets by driving Metasploit’s auxiliary/scanner/ssh/ssh_login module from Python via pwntools. (github-poc)
- CVE-2008-5161 OpenSSH 4.7p1 Audit Helper Automates version checking and credential auditing of legacy OpenSSH 4.7p1 (Debian-8ubuntu1) targets by driving Metasploit’s auxiliary/scanner/ssh/ssh_login module from Python via pwntools. (github-poc)
- CVE-2008-5161 OpenSSH 4.7p1 Audit Helper Automates version checking and credential auditing of legacy OpenSSH 4.7p1 (Debian-8ubuntu1) targets by driving Metasploit’s auxiliary/scanner/ssh/ssh_login module from Python via pwntools. (github-poc)
Timeline
- Jul 29, 2020 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 24, 2021 EPSS Score
- Sep 22, 2021 EPSS Score
- Oct 11, 2021 EPSS Score
- Oct 26, 2021 EPSS Score
- Dec 27, 2021 EPSS Score
- Feb 4, 2022 EPSS Score
- Feb 28, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 1, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-14311 third-party-advisory
- https://www.eclypsium.com/2020/07/29/theres-a-hole-in-the-boot/ third-party-advisory
- https://wiki.ubuntu.com/SecurityTeam/KnowledgeBase/GRUB2SecureBootBypass third-party-advisory
- https://www.openwall.com/lists/oss-security/2020/07/29/3 third-party-advisory
- https://lists.gnu.org/archive/html/grub-devel/2020-07/msg00034.html third-party-advisory
- https://ubuntu.com/security/notices/USN-4432-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-14311 third-party-advisory