CVE-2022-24772Network attack vector

Signature forgery via trailing garbage acceptance

Published Mar 18, 2022 · Updated Apr 23, 2025

Improper cryptographic signature verification in Digital Bazaar Forge before 1.3.0 allows remote attackers to forge RSA signatures via crafted inputs. The RSA PKCS#1 v1.5 verifier decodes DigestInfo but fails to reject trailing garbage bytes, allowing padding removal and attacker-controlled data when a low public exponent is used. Exploitation requires a verifier that accepts such keys and lets attacker-supplied signatures reach this routine; successful forgery can make altered data appear authentically signed.

CVSS severity7.5
High
EPSS probability1.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper cryptographic signature verification in Digital Bazaar Forge before 1.3.0 allows remote attackers to forge RSA signatures via crafted inputs. The RSA PKCS#1 v1.5 verifier decodes DigestInfo but fails to reject trailing garbage bytes, allowing padding removal and attacker-controlled data when a low public exponent is used. Exploitation requires a verifier that accepts such keys and lets attacker-supplied signatures reach this routine; successful forgery can make altered data appear authentically signed.

The record

CVE
CVE-2022-24772
Published
Mar 18, 2022
Updated
Apr 23, 2025
Vendor
Digital Bazaar
Product
Forge
Classifications
CWE-347
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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=< 1.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Digital Bazaar · Forgeversion=< 1.3.0

Published CVSS scores

7.5GitHub CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature

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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