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Ubuntu: (CVE-2019-18840): wolfssl vulnerability

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Ubuntu: (CVE-2019-18840): wolfssl vulnerability

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
11/09/2019
Created
11/21/2024
Added
11/19/2024
Modified
11/19/2024

Description

In wolfSSL 4.1.0 through 4.2.0c, there are missing sanity checks of memory accesses in parsing ASN.1 certificate data while handshaking. Specifically, there is a one-byte heap-based buffer overflow inside the DecodedCert structure in GetName in wolfcrypt/src/asn.c because the domain name location index is mishandled. Because a pointer is overwritten, there is an invalid free.

Solution(s)

  • ubuntu-upgrade-wolfssl

References

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