Vulnerability-Lookup

ubuntu-cve-2026-85150

Vulnerability from osv_ubuntu

Published

2026-09-04 00:00

Modified

2026-09-04 00:00

Summary

Details

A NULL pointer dereference flaw was found in GStreamer's RTSP support library. The vulnerability occurs while parsing an Authorization or WWW-Authenticate header that uses Digest authentication. Specially crafted whitespace placement around a parameter's terminator can cause an internal length calculation to underflow, leading to a crash of the process parsing the header. On an RTSP server this can be triggered by a remote, unauthenticated attacker sending a single malformed request when the server has authentication enabled; the same flaw can also be triggered against an RTSP client by a malicious or compromised RTSP server. Successful exploitation results in a denial of service (application crash) and has no confirmed impact on confidentiality or integrity.

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-85150	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-85150	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2527936	REPORT
	https://gstreamer.freedesktop.org/security/sa-202…	REPORT
	https://gitlab.freedesktop.org/gstreamer/gstreame…	REPORT
	https://access.redhat.com/security/cve/CVE-2026-85150	REPORT
	https://gitlab.freedesktop.org/gstreamer/gstreame…	REPORT

JSON

To clipboard

{
  "affected": [
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      "ecosystem_specific": {
        "binaries": [
          {
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        "name": "gst-plugins-base1.0",
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      "package": {
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      "package": {
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    }
  ],
  "aliases": [],
  "details": "A NULL pointer dereference flaw was found in GStreamer\u0027s RTSP support library. The vulnerability occurs while parsing an Authorization or WWW-Authenticate header that uses Digest authentication. Specially crafted whitespace placement around a parameter\u0027s terminator can cause an internal length calculation to underflow, leading to a crash of the process parsing the header. On an RTSP server this can be triggered by a remote, unauthenticated attacker sending a single malformed request when the server has authentication enabled; the same flaw can also be triggered against an RTSP client by a malicious or compromised RTSP server. Successful exploitation results in a denial of service (application crash) and has no confirmed impact on confidentiality or integrity.",
  "id": "UBUNTU-CVE-2026-85150",
  "modified": "2026-09-04T00:00:00Z",
  "published": "2026-09-04T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-85150"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-85150"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527936"
    },
    {
      "type": "REPORT",
      "url": "https://gstreamer.freedesktop.org/security/sa-2026-0082.html"
    },
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      "type": "REPORT",
      "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/120"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-85150"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/blob/main/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspmessage.c#L1408"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-85150"
  ]
}

CVE-2026-85150 (GCVE-0-2026-85150)

Vulnerability from cvelistv5 – Published: 2026-09-03 10:47 – Updated: 2026-09-03 12:34

Title

Gstreamer1-plugins-base: gstreamer: null/invalid-pointer dereference in gst_rtsp_message_parse_auth_credentials() when parsing a crafted digest authorization/www-authenticate header

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-03 12:33 UTC

CWE

CWE-476 - NULL Pointer Dereference

Assigner

redhat redhat root

References

4 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2026-85150	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2527936	issue-trackingx_refsource_REDHAT
https://gitlab.freedesktop.org/gstreamer/gstreame…
https://gitlab.freedesktop.org/gstreamer/gstreame…

Impacted products

4 products

Vendor	Product	Version
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9

Date Public

2026-09-03 10:25

Credits

Upstream acknowledges Roy Lau (Independent researcher) as the original reporter.

Show details on NVD website

JSON

To clipboard

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                ],
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                "timestamp": "2026-09-03T12:33:40.281754Z",
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          "url": "https://access.redhat.com/security/cve/CVE-2026-85150"
        },
        {
          "name": "RHBZ#2527936",
          "tags": [
            "issue-tracking",
            "x_refsource_REDHAT"
          ],
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2527936"
        },
        {
          "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer-security/-/merge_requests/120"
        },
        {
          "url": "https://gitlab.freedesktop.org/gstreamer/gstreamer/-/blob/main/subprojects/gst-plugins-base/gst-libs/gst/rtsp/gstrtspmessage.c#L1408"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-08-26T00:00:00.000Z",
          "value": "Reported to Red Hat."
        },
        {
          "lang": "en",
          "time": "2026-09-03T10:25:00.000Z",
          "value": "Made public."
        }
      ],
      "title": "Gstreamer1-plugins-base: gstreamer: null/invalid-pointer dereference in gst_rtsp_message_parse_auth_credentials() when parsing a crafted digest authorization/www-authenticate header",
      "workarounds": [
        {
          "lang": "en",
          "value": "No mitigation is currently available that meets Red Hat Product Security\u0027s standards for usability, deployment, applicability, or stability."
        }
      ],
      "x_generator": {
        "engine": "cvelib 1.8.0"
      },
      "x_redhatCweChain": "CWE-476: NULL Pointer Dereference"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2026-85150",
    "datePublished": "2026-09-03T10:47:10.711Z",
    "dateReserved": "2026-09-03T10:21:17.760Z",
    "dateUpdated": "2026-09-03T12:34:05.679Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.