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CVE-2015-8370

Disclosure Date: December 16, 2015
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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.

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CVSS V3 Severity and Metrics
Base Score:
None
Impact Score:
Unknown
Exploitability Score:
Unknown
Vector:
Unknown
Attack Vector (AV):
Unknown
Attack Complexity (AC):
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Privileges Required (PR):
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User Interaction (UI):
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Scope (S):
Unknown
Confidentiality (C):
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Integrity (I):
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Availability (A):
Unknown

General Information

Vendors

  • fedoraproject,
  • gnu

Products

  • fedora 23,
  • grub2 1.98,
  • grub2 1.99,
  • grub2 2.00,
  • grub2 2.01,
  • grub2 2.02

References

Advisory

Additional Info

Technical Analysis