SB2017121538 - TLS Padding Oracle in Cisco ASA

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Main Vulnerability Database SB2017121538

SB2017121538 - TLS Padding Oracle in Cisco ASA

Published: December 15, 2017 Updated: January 3, 2024

Security Bulletin ID SB2017121538
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Adjecent network
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) TLS Padding Oracle (CVE-ID: CVE-2017-12373)

CWE-ID: CWE-310 - Cryptographic Issues

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to decrypt TLS traffic.

The vulnerability exists due to an error in TLS implementation. A remote attacker with ability to establish a large number of TLS connections with the target server can conduct an adaptive-chosen ciphertext attack against RSA cipher and gain access to sensitive information.

The attack is known as "ROBOT" (Return Of Bleichenbacher's Oracle Threat).


Remediation

Install update from vendor's website.

References