Vulnerability-Lookup

FKIE_CVE-2020-1983

Vulnerability from fkie_nvd - Published: 2020-04-22 20:15 - Updated: 2026-06-17 03:02

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
6.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Summary

A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service.

References

URL	Tags
psirt@paloaltonetworks.com	http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00022.html	Mailing List, Third Party Advisory
psirt@paloaltonetworks.com	http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00001.html	Mailing List, Third Party Advisory
psirt@paloaltonetworks.com	https://gitlab.freedesktop.org/slirp/libslirp/-/commit/9ac0371bb8c0a40f5d9f82a1c25129660e81df04	Patch, Third Party Advisory
psirt@paloaltonetworks.com	https://gitlab.freedesktop.org/slirp/libslirp/-/issues/20	Exploit, Third Party Advisory
psirt@paloaltonetworks.com	https://lists.debian.org/debian-lts-announce/2020/06/msg00032.html	Mailing List, Third Party Advisory
psirt@paloaltonetworks.com	https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html	Mailing List, Third Party Advisory
psirt@paloaltonetworks.com	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HWFD4MWV3YWIHVHSA2F7FKOLJFL4PHOX/
psirt@paloaltonetworks.com	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NKT2MTSINE4NUPG5L6BYH6N23NBNITOL/
psirt@paloaltonetworks.com	https://usn.ubuntu.com/4372-1/	Third Party Advisory
psirt@paloaltonetworks.com	https://www.debian.org/security/2020/dsa-4665	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00022.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00001.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://gitlab.freedesktop.org/slirp/libslirp/-/commit/9ac0371bb8c0a40f5d9f82a1c25129660e81df04	Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://gitlab.freedesktop.org/slirp/libslirp/-/issues/20	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2020/06/msg00032.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HWFD4MWV3YWIHVHSA2F7FKOLJFL4PHOX/
af854a3a-2127-422b-91ae-364da2661108	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NKT2MTSINE4NUPG5L6BYH6N23NBNITOL/
af854a3a-2127-422b-91ae-364da2661108	https://usn.ubuntu.com/4372-1/	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2020/dsa-4665	Third Party Advisory

Impacted products

Vendor	Product	Version
libslirp_project	libslirp	*
fedoraproject	fedora	31
fedoraproject	fedora	32
debian	debian_linux	8.0
debian	debian_linux	9.0
opensuse	leap	15.1
canonical	ubuntu_linux	16.04
canonical	ubuntu_linux	18.04
canonical	ubuntu_linux	19.10
canonical	ubuntu_linux	20.04

JSON

To clipboard

{
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          "vendor": "slirp",
          "versions": [
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      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de uso de la memoria previamente liberada en la funci\u00f3n ip_reass() en el archivo ip_input.c de libslirp versiones 4.2.0 y anteriores permite que paquetes especialmente dise\u00f1ados causen una denegaci\u00f3n de servicio."
    }
  ],
  "id": "CVE-2020-1983",
  "lastModified": "2026-06-17T03:02:46.137",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 2.1,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
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    "cvssMetricV31": [
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          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "psirt@paloaltonetworks.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
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          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
          "version": "3.1"
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        "impactScore": 4.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
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    ]
  },
  "published": "2020-04-22T20:15:11.480",
  "references": [
    {
      "source": "psirt@paloaltonetworks.com",
      "tags": [
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        "Third Party Advisory"
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      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00022.html"
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        "Third Party Advisory"
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    },
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          "value": "CWE-416"
        }
      ],
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      "type": "Secondary"
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}

CVE-2020-1983 (GCVE-0-2020-1983)

Vulnerability from cvelistv5 – Published: 2020-04-22 19:30 – Updated: 2024-09-16 19:41

Title

libslirp: use after free vulnerability cause a denial of service.

Summary

A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service.

Severity

7.5 (High)


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

CWE

CWE-416 - Use After Free

Assigner

palo_alto mitre root Scorecard

References

10 references

URL	Tags
https://gitlab.freedesktop.org/slirp/libslirp/-/i…	x_refsource_MISC
https://gitlab.freedesktop.org/slirp/libslirp/-/c…	x_refsource_MISC
https://www.debian.org/security/2020/dsa-4665	vendor-advisoryx_refsource_DEBIAN
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://usn.ubuntu.com/4372-1/	vendor-advisoryx_refsource_UBUNTU
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version
slirp	libslirp	Affected: unspecified , ≤ 4.2.0 (custom)

Date Public

2020-04-20 00:00

Credits

This issue was discovered by Aviv Sasson of Palo Alto Networks.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T06:54:00.401Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
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            "url": "https://gitlab.freedesktop.org/slirp/libslirp/-/issues/20"
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              "x_refsource_MISC",
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          },
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          {
            "name": "FEDORA-2020-1608d52724",
            "tags": [
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              "x_transferred"
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            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NKT2MTSINE4NUPG5L6BYH6N23NBNITOL/"
          },
          {
            "name": "openSUSE-SU-2020:0636",
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            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00001.html"
          },
          {
            "name": "[debian-lts-announce] 20200629 [SECURITY] [DLA 2262-1] qemu security update",
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            "url": "https://lists.debian.org/debian-lts-announce/2020/06/msg00032.html"
          },
          {
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            "tags": [
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              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/07/msg00020.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "libslirp",
          "vendor": "slirp",
          "versions": [
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              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
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      ],
      "credits": [
        {
          "lang": "en",
          "value": "This issue was discovered by Aviv Sasson of Palo Alto Networks."
        }
      ],
      "datePublic": "2020-04-20T00:00:00.000Z",
      "descriptions": [
        {
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          "value": "A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "A public proof of concept is available."
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      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
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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.

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

FKIE_CVE-2020-1983

CVE-2020-1983 (GCVE-0-2020-1983)

Tags

Sightings

Nomenclature

Related by attack behaviour