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Critical

Timing attack on HMAC signature comparison in Apache Tapestry

  • Disclosed: 26.09.2019
  • Updated: 11.10.2026 11:21

The code which checks HMAC in form submissions used String.equals() for comparisons, which results in a timing side channel for the comparison of the HMAC signatures. This could lead to remote code execution if an attacker is able to determine the correct signature for their payload. The comparison should be done with a constant time algorithm instead.

Affected software

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PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.apache.tapestry:tapestry-core >= 5.4, < 5.4.5 5.4.5

References

CVSS score 9.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-203, CWE-697
Platform
Java / Kotlin (Maven)
Package
org.apache.tapestry:tapestry-core
Disclosed
26.09.2019
Updated
11.10.2026 11:21

Sources and licenses

OSV / GitHub Advisory Database - GHSA-fgmr-vx7c-5wj6 - CC BY 4.0

Vulnerability history: org.apache.tapestry:tapestry-core

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (9) in the archive
Total entries
9
First → latest
09.2019 12.2022
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 4
  • High 4
  • Medium 1

Disclosures per year

Severity:
  1. Apache Tapestry allows deserialization of untrusted data
    Critical · 9.8 CVE-2022-46366 >= 3.0, < 5.0.1 5.0.1
  2. Apache Tapestry 5.8.1 vulnerable to ReDoS via Content Types causing catastrophic backtracking
    High · 7.5 CVE-2022-31781 < 5.8.2 5.8.2
  3. Deserialization of Untrusted Data in Apache Tapestry
    Critical · 9.8 CVE-2019-0195 >= 5.4.0, < 5.4.5 5.4.5
  4. Apache Tapestry Unsafe Object Storage
    High CVE-2014-1972 < 5.3.6 5.3.6
  5. Information Exposure in Apache Tapestry
    High · 7.5 CVE-2021-30638 >= 5.4.0, < 5.6.4, >= 5.7.0, < 5.7.2 5.6.4, 5.7.2
  6. Remote code execution in Apache Tapestry
    Critical CVE-2021-27850 >= 5.4.0, < 5.6.3, >= 5.7.0, < 5.7.1 5.6.3, 5.7.1
  7. Path traversal attack on Windows platforms
    High · 7.5 CVE-2019-0207 >= 5.4.0, < 5.4.5 5.4.5
  8. Timing attack on HMAC signature comparison in Apache Tapestry this entry
    Critical · 9.8 CVE-2019-10071 >= 5.4, < 5.4.5 5.4.5

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