CVE-2022-30629Network attack vector

Connection correlation via zero-valued ticket_age_add

Published Aug 9, 2022 · Updated Mar 6, 2026

Insufficient randomness in crypto/tls before Go 1.17.11 and Go 1.18.0 through 1.18.2 allows attackers to correlate TLS connections. The serverHandshakeStateTLS13.sendSessionTickets routine writes ticket_age_add as zero instead of generating a random 32-bit value for each session ticket. The attack requires visibility into an original TLS 1.3 handshake and its resumed connection, and the consequence is linkability between those sessions.

CVSS severity3.1
Low
EPSS probability1.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient randomness in crypto/tls before Go 1.17.11 and Go 1.18.0 through 1.18.2 allows attackers to correlate TLS connections. The serverHandshakeStateTLS13.sendSessionTickets routine writes ticket_age_add as zero instead of generating a random 32-bit value for each session ticket. The attack requires visibility into an original TLS 1.3 handshake and its resumed connection, and the consequence is linkability between those sessions.

The record

CVE
CVE-2022-30629
Published
Aug 9, 2022
Updated
Mar 6, 2026
Vendor
Go standard library
Product
crypto/tls
Classifications
CWE-330, T1040
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Mar 6, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.17.11
  2. Affected versionversion=1.18.0-0 <1.18.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · crypto/tlsversion=0 <1.17.11; version=1.18.0-0 <1.18.3

Published CVSS scores

3.1CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
3.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-330Use of Insufficiently Random Values
T1040Network Sniffing

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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