github - ghsa-wvqp-mg76-5qw7

GHSA-WVQP-MG76-5QW7

Vulnerability from github – Published: 2022-05-24 22:00 – Updated: 2022-05-24 22:00

Details

An issue was discovered in Rsyslog v8.1908.0. contrib/pmaixforwardedfrom/pmaixforwardedfrom.c has a heap overflow in the parser for AIX log messages. The parser tries to locate a log message delimiter (in this case, a space or a colon) but fails to account for strings that do not satisfy this constraint. If the string does not match, then the variable lenMsg will reach the value zero and will skip the sanity check that detects invalid log messages. The message will then be considered valid, and the parser will eat up the nonexistent colon delimiter. In doing so, it will decrement lenMsg, a signed integer, whose value was zero and now becomes minus one. The following step in the parser is to shift left the contents of the message. To do this, it will call memmove with the right pointers to the target and destination strings, but the lenMsg will now be interpreted as a huge value, causing a heap overflow.

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{
  "affected": [],
  "aliases": [
    "CVE-2019-17041"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-120",
      "CWE-20",
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-10-07T16:15:00Z",
    "severity": "HIGH"
  },
  "details": "An issue was discovered in Rsyslog v8.1908.0. contrib/pmaixforwardedfrom/pmaixforwardedfrom.c has a heap overflow in the parser for AIX log messages. The parser tries to locate a log message delimiter (in this case, a space or a colon) but fails to account for strings that do not satisfy this constraint. If the string does not match, then the variable lenMsg will reach the value zero and will skip the sanity check that detects invalid log messages. The message will then be considered valid, and the parser will eat up the nonexistent colon delimiter. In doing so, it will decrement lenMsg, a signed integer, whose value was zero and now becomes minus one. The following step in the parser is to shift left the contents of the message. To do this, it will call memmove with the right pointers to the target and destination strings, but the lenMsg will now be interpreted as a huge value, causing a heap overflow.",
  "id": "GHSA-wvqp-mg76-5qw7",
  "modified": "2022-05-24T22:00:56Z",
  "published": "2022-05-24T22:00:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-17041"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rsyslog/rsyslog/pull/3884"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rsyslog/rsyslog/blob/v8-stable/ChangeLog"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2021/11/msg00030.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KPNCHI7X2IEXRH6RYD6IDPR4PLB5RPC7"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/W6SUQE25RD37CD24BHKUWMG27U5RQ2FU"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00031.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00032.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2019-17041 (GCVE-0-2019-17041)

Vulnerability from cvelistv5 – Published: 2019-10-07 15:31 – Updated: 2024-08-05 01:24

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://github.com/rsyslog/rsyslog/blob/v8-stable…	x_refsource_CONFIRM
	https://github.com/rsyslog/rsyslog/pull/3884	x_refsource_CONFIRM
	http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
	http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

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Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-WVQP-MG76-5QW7

CVE-2019-17041 (GCVE-0-2019-17041)

Tags

Sightings

Nomenclature