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Cisco Bug: CSCvt23549 - Custom field to display TLS version in access logs doesn't work if TLS version is disabled for proxy

Last Modified

Jun 05, 2020

Products (1)

  • Cisco Web Security Appliance

Known Affected Releases

11.8.0-453

Description (partial)

Symptom:
Custom field "%$?" to display TLS version in access logs doesn't work if TLS version is disabled on WSA

For example, if TLS 1.0 is disabled for proxy, it will show "?" in access logs, but will fully log TLS 1.2:

AES256-GCM-SHA384__TLSv1.2__Kx=RSA__Au=RSA__Enc=AESGCM(256)__Mac=AEAD

Conditions:
Custom field "%$?" added to access log subscription, user is trying to access the web-site that offers TLS version, which is disabled on the WSA :

CLI: sslconfig > versions > proxy

                Proxy
SSLv3.0    N       
TLSv1.0    N       
TLSv1.1    Y       
TLSv1.2    Y
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  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
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