7.5high

CVE-1999-1111

Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a n…

Published 26 y ago · modified 4 mo ago · JSON

CVSS
7.5
v2.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.8%
percentile 79%
Public exploits
0
none known

Summary

Vulnerability in StackGuard before 1.21 allows remote attackers to bypass the Random and Terminator Canary security mechanisms by using a non-linear attack which directly modifies a pointer to a return address instead of using a buffer overflow to reach the return address entry itself.

Exploit prediction (EPSS)

1.80% probability of exploitation in the next 30 days, higher than 79% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD2.07.5AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.