Instruction Sequence Vulnerability in GNU Compiler Collection by GNU
CVE-2017-11671

4MEDIUM

Key Information:

Vendor
Gnu
Status
Gcc
Vendor
CVE Published:
26 July 2017

Summary

The ix86_expand_builtin function in i386.c of the GNU Compiler Collection could generate instruction sequences that inadvertently alter the status flags of RDRAND and RDSEED intrinsics. This error occurs in several GCC versions (4.6, 4.7, 4.8, 4.9, and earlier versions of 5 and 6), leading to potential failures in reporting issues related to these instructions. Consequently, this vulnerability can result in diminished randomness from random number generation processes, which poses risks to applications relying on secure cryptographic operations.

References

http://openwall.com/lists/oss-security/2017/07/27/2
x_refsource_CONFIRM
http://www.securityfocus.com/bid/100018
vdb-entryx_refsource_BID
https://access.redhat.com/errata/RHSA-2018:0849
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.