Description
The SSL 3 HMAC functionality in wolfSSL CyaSSL 2.5.0 before 2.9.4 does not check the padding length when verification fails, which allows remote attackers to have unspecified impact via a crafted HMAC, which triggers an out-of-bounds read.
References (4)
Core 4
Core References
Vendor Advisory x_refsource_confirm
http://www.wolfssl.com/yaSSL/Blog/Entries/2014/4/11_wolfSSL_Security_Advisory__April_9%2C_2014.html
Vendor Advisory x_refsource_confirm
http://www.wolfssl.com/yaSSL/Docs-cyassl-changelog.html
Mailing List, Third Party Advisory x_refsource_misc
http://seclists.org/oss-sec/2014/q2/126
Mailing List, Third Party Advisory x_refsource_misc
http://seclists.org/oss-sec/2014/q2/130
Scores
CVSS v3
9.8
EPSS
0.0101
EPSS Percentile
77.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-125
Status
published
Products (1)
wolfssl/wolfssl
2.5.0 - 2.9.4
Published
Jan 28, 2020
Tracked Since
Feb 18, 2026