GHSA-4grw-m28r-q285

Source

https://github.com/advisories/GHSA-4grw-m28r-q285

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/12/GHSA-4grw-m28r-q285/GHSA-4grw-m28r-q285.json

JSON Data

https://api.test.osv.dev/v1/vulns/GHSA-4grw-m28r-q285

Aliases

CVE-2024-53857

Published

2024-12-05T17:31:35Z

Modified

2024-12-05T19:05:49Z

Severity

7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

rPGP Potential Resource Exhaustion when handling Untrusted Messages

Details

During a security audit, Radically Open Security discovered two vulnerabilities which allow attackers to trigger resource exhaustion vulnerabilities in rpgp by providing crafted messages. This affects general message parsing and decryption with symmetric keys.

Impact

Affected rpgp versions do not correctly set upper limits on the total reserved amount of memory when parsing long sequences of partial OpenPGP packets, which can grow to to several GiB in size. Additionally, up to 4GiB of memory is reserved for OpenPGP packets of fixed size with large length fields, even if less data is received. Depending on existing message size restrictions and available system resources, this can cause out-of-memory conditions and crash the rpgp process or cause other system instability through memory resource exhaustion when parsing crafted messages.

Affected rpgp versions are susceptible to excessive memory allocation with values of up to 2TiB or long processing times for some decryption operations which involve the Argon2 function. An attacker can provide a valid Symmetric Key Encrypted Session Key packet (SKESK) which uses Argon2 for String-to-Key hashing with parameters that are excessive, but within specification limits of the RFC9580 OpenPGP standard. Since rpgp did not further restrict the Argon2 parameters, this can cause out-of-memory conditions and crash the rpgp process. Under some conditions, the memory resource exhaustion may trigger other system instability. Alternatively, this can make the program unresponsive via long computations. The attacker needs to trick a victim into attempting decryption, but does not require knowledge of the symmetric secret used by the victim.

There is no impact to confidentiality or integrity security properties.

Versions and Patches

The impact details on the message parsing component varies with different versions. We've confirmed some of the problematic behavior on older versions such as v0.10.0 and see all recent versions as affected in some form.

The affected Argon2 functionality was introduced with v0.12.0-alpha.1, earlier versions are not vulnerable.

The vulnerabilities have been fixed with version 0.14.2. We recommend all users to upgrade to this version.

References

The security audit was made possible by the NLnet Foundation NGI Zero Core grant program for rpgp.

Database specific

{
    "nvd_published_at": "2024-12-05T16:15:26Z",
    "cwe_ids": [
        "CWE-770"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2024-12-05T17:31:35Z"
}

References

Affected packages

crates.io / pgp

Package

Name: pgp; View open source insights on deps.dev
Purl: pkg:cargo/pgp

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.14.2