CVE-2015-8370
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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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173703.html
- http://lists.fedoraproject.org/pipermail/package-announce/2015-December/174049.html
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00037.html
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00039.html
- http://lists.opensuse.org/opensuse-security-announce/2015-12/msg00040.html
References (23)
SSVC — Action Prioritization
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- LOCAL
- Complexity
- HIGH
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
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