CVE-2022-24795 (GCVE-0-2022-24795)

Vulnerability from cvelistv5 – Published: 2022-04-05 00:00 – Updated: 2025-04-22 18:17
VLAI
Title
Buffer Overflow and Integer Overflow in yajl-ruby
Summary
yajl-ruby is a C binding to the YAJL JSON parsing and generation library. The 1.x branch and the 2.x branch of `yajl` contain an integer overflow which leads to subsequent heap memory corruption when dealing with large (~2GB) inputs. The reallocation logic at `yajl_buf.c#L64` may result in the `need` 32bit integer wrapping to 0 when `need` approaches a value of 0x80000000 (i.e. ~2GB of data), which results in a reallocation of buf->alloc into a small heap chunk. These integers are declared as `size_t` in the 2.x branch of `yajl`, which practically prevents the issue from triggering on 64bit platforms, however this does not preclude this issue triggering on 32bit builds on which `size_t` is a 32bit integer. Subsequent population of this under-allocated heap chunk is based on the original buffer size, leading to heap memory corruption. This vulnerability mostly impacts process availability. Maintainers believe exploitation for arbitrary code execution is unlikely. A patch is available and anticipated to be part of yajl-ruby version 1.4.2. As a workaround, avoid passing large inputs to YAJL.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
brianmario yajl-ruby Affected: <= 1.4.1
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Se presenta un parche disponible y se espera que forme parte de la versi\u00f3n 1.4.2. Como medida de mitigaci\u00f3n, evite pasar entradas grandes a YAJL\"}],\"affected\":[{\"source\":\"security-advisories@github.com\",\"affectedData\":[{\"vendor\":\"brianmario\",\"product\":\"yajl-ruby\",\"versions\":[{\"version\":\"\u003c= 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-04-22T18:46:42+00:00",
      "cve": "CVE-2022-24795",
      "id": "CVE-2022-24795",
      "initial_release_date": "2022-04-05T00:00:00+00:00",
      "product_status:fixed": "126",
      "product_status:known_affected": "13",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "yajl: heap-based buffer overflow when handling large inputs due to an integer overflow",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-24795.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-19T18:12:22Z",
      "cve": "CVE-2022-24795",
      "id": "CVE-2022-24795",
      "initial_release_date": "2023-02-15T03:27:38Z",
      "product_status:known_affected": "267",
      "product_status:recommended": "289",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2022-24795",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2022-24795.json",
      "version": "41"
    },
    "vulnrichment": {
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}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.