GO-2022-0531

vendorUSosv

Session tickets lack random ticket_age_add in crypto/tls

view advisory published 2022-07-28Licence: per source

An attacker can correlate a resumed TLS session with a previous connection. Session tickets generated by crypto/tls do not contain a randomly generated ticket_age_add, which allows an attacker that can observe TLS handshakes to correlate successive connections by comparing ticket ages during session resumption.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2022-30629US	low3.1OT elevated	1.21% (68th)	—	2022-08-10
Non-random values for ticket_age_add in session tickets in crypto/tls before Go 1.17.11 and Go 1.18.3 allow an attacker that can observe TLS handshakes to correlate successive conn…

references

External citations — patches, advisories, analysis.

https://go.dev/cl/405994FIX
https://go.dev/issue/52814REPORT
https://go.googlesource.com/go/+/fe4de36198794c447fbd9d7cc2d7199a506c76a5FIX
https://groups.google.com/g/golang-announce/c/TzIC9-t8Ytg/m/IWz5T6x7AAAJWEB

scry

Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.

Free scan