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This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulnerability

SYNTHESIS OF THE VULNERABILITY

Impacted products: Blue Coat CAS, ProxySG par Blue Coat, SGOS by
Blue Coat, Broadcom Content Analysis, ProxySG by Symantec, SGOS by
Symantec, Debian, AIX, IBM i, Nodejs Core, OpenSSL, openSUSE Leap,
stunnel, SUSE Linux Enterprise Desktop, SLES, Ubuntu, VxWorks.

Severity: 2/4.

Consequences: user access/rights, denial of service on service,
denial of service on client.

Provenance: document.

Confidence: confirmed by the editor (5/5).

Creation date: 16/02/2021.

DESCRIPTION OF THE VULNERABILITY

An attacker can trigger a buffer overflow via EVP_XUpdate of
OpenSSL, in order to trigger a denial of service, and possibly to
run code.

ACCESS TO THE FULL VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/OpenSSL-buffer-overflow-via-EVP-XUpdate-34597