CVE-2015-8370
- State
- Published
- Severity
- 7.4 High
- Published
- Dec 16, 2015
- Updated
- Oct 21, 2024
- Reserved
- Nov 27, 2015
Description
Multiple integer underflows in Grub2 1.98 through 2.02 allow physically proximate attackers to bypass authentication, obtain sensitive information, or cause a denial of service (disk corruption) via backspace characters in the (1) grub_username_get function in grub-core/normal/auth.c or the (2) grub_password_get function in lib/crypto.c, which trigger an "Off-by-two" or "Out of bounds overwrite" memory error.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.4 High | CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | CISA-ADP |
Weaknesses
- CWE-191 Integer Underflow (Wrap or Wraparound)
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- http://packetstormsecurity.com/files/134831/Grub2-Authentication-Bypass.html
- openSUSE-SU-2015:2392vendor-advisory
- openSUSE-SU-2016:0036vendor-advisory
- http://hmarco.org/bugs/CVE-2015-8370-Grub2-authentication-bypass.html
- 79358vdb-entry
- openSUSE-SU-2015:2375vendor-advisory
- 1034422vdb-entry
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
- SUSE-SU-2015:2387vendor-advisory
- SUSE-SU-2015:2386vendor-advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- [oss-security] 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]mailing-list
- 20151215 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]mailing-list
- SUSE-SU-2015:2385vendor-advisory
- 20151216 Back to 28: Grub2 Authentication Bypass 0-Day [CVE-2015-8370]mailing-list
- GLSA-201512-03vendor-advisory
- FEDORA-2015-cebe5133e7vendor-advisory
- USN-2836-1vendor-advisory
- FEDORA-2015-90c27b6e91vendor-advisory
- RHSA-2015:2623vendor-advisory
- SUSE-SU-2015:2399vendor-advisory
- DSA-3421vendor-advisory
- [oss-security] 20240116 CVE-2023-4001: a password bypass vulnerability in the downstream GRUB boot managermailing-list
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