Description
GNU Bison before 3.5.4 allows attackers to cause a denial of service (application crash). NOTE: there is a risk only if Bison is used with untrusted input, and an observed bug happens to cause unsafe behavior with a specific compiler/architecture. The bug reports were intended to show that a crash may occur in Bison itself, not that a crash may occur in code that is generated by Bison.
References (2)
Core 2
Core References
Mailing List, Vendor Advisory x_refsource_misc
https://lists.gnu.org/archive/html/info-gnu/2020-04/msg00000.html
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugs.gentoo.org/717936
Scores
CVSS v3
5.5
EPSS
0.0012
EPSS Percentile
30.0%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details
Status
published
Products (1)
gnu/bison
< 3.5.4
Published
Jun 15, 2020
Tracked Since
Feb 18, 2026