github - ghsa-q7f4-j236-f4hc

ghsa-q7f4-j236-f4hc

Vulnerability from github

Published

2021-12-15 00:01

Modified

2022-04-13 00:01

Severity ?

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

The olm_session_describe function in Matrix libolm before 3.2.7 is vulnerable to a buffer overflow. The Olm session object represents a cryptographic channel between two parties. Therefore, its state is partially controllable by the remote party of the channel. Attackers can construct a crafted sequence of messages to manipulate the state of the receiver's session in such a way that, for some buffer sizes, a buffer overflow happens on a call to olm_session_describe. Furthermore, safe buffer sizes were undocumented. The overflow content is partially controllable by the attacker and limited to ASCII spaces and digits. The known affected products are Element Web And SchildiChat Web.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-44538"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-12-14T14:15:00Z",
    "severity": "CRITICAL"
  },
  "details": "The olm_session_describe function in Matrix libolm before 3.2.7 is vulnerable to a buffer overflow. The Olm session object represents a cryptographic channel between two parties. Therefore, its state is partially controllable by the remote party of the channel. Attackers can construct a crafted sequence of messages to manipulate the state of the receiver\u0027s session in such a way that, for some buffer sizes, a buffer overflow happens on a call to olm_session_describe. Furthermore, safe buffer sizes were undocumented. The overflow content is partially controllable by the attacker and limited to ASCII spaces and digits. The known affected products are Element Web And SchildiChat Web.",
  "id": "GHSA-q7f4-j236-f4hc",
  "modified": "2022-04-13T00:01:14Z",
  "published": "2021-12-15T00:01:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-44538"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.matrix.org/matrix-org/olm/-/tags"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html"
    },
    {
      "type": "WEB",
      "url": "https://matrix.org/blog/2021/12/13/disclosure-buffer-overflow-in-libolm-and-matrix-js-sdk"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2022/dsa-5034"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2021-44538

Vulnerability from cvelistv5

Published

2021-12-14 13:26

Modified

2024-08-04 04:25

Severity ?

Summary

References

▼	URL	Tags
	https://gitlab.matrix.org/matrix-org/olm/-/tags	x_refsource_MISC
	https://matrix.org/blog/2021/12/13/disclosure-buffer-overflow-in-libolm-and-matrix-js-sdk	x_refsource_MISC
	https://www.debian.org/security/2022/dsa-5034	vendor-advisory, x_refsource_DEBIAN
	https://lists.debian.org/debian-lts-announce/2022/01/msg00001.html	mailing-list, x_refsource_MLIST

Impacted products

Vendor

Product

Version

▼

n/a

Version: n/a

Show details on NVD website

JSON

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          },
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            ],
            "url": "https://matrix.org/blog/2021/12/13/disclosure-buffer-overflow-in-libolm-and-matrix-js-sdk"
          },
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            "tags": [
              "vendor-advisory",
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            "url": "https://www.debian.org/security/2022/dsa-5034"
          },
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            ],
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        }
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      "providerMetadata": {
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}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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