Description (CNA)
A stack-based out-of-bounds read vulnerability exists in the "s_vlog" function of stunnel, when handling oversized log messages via "vsnprintf". A remote attacker with network access to a stunnel service can send protocol inputs that trigger a log message longer than 1024 bytes, leading to an out-of-bounds stack read and a potential crash. In certain corner cases, the same vulnerability could be used to replace a series of trailing "\n" characters with "\0".
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Mobi-Com Polska Sp. z o.o. / stunnel | affected 5.68 before 5.80 |
| Red Hat / Red Hat Enterprise Linux 10 | affected |
| Red Hat / Red Hat Enterprise Linux 6 | unaffected |
| Red Hat / Red Hat Enterprise Linux 7 | unaffected |
| Red Hat / Red Hat Enterprise Linux 8 | affected |
| Red Hat / Red Hat Enterprise Linux 9 | affected |
CWE
CWE-125
References
- https://access.redhat.com/security/cve/CVE-2026-70368
- https://bugzilla.redhat.com/show_bug.cgi?id=2462029
ADP enrichment
No English description supplied.
No references supplied.