Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Application Level Gateway Bypass Vulnerabilities (Cisco Cisco Adaptive Security Appliance (ASA) Software)

CVE-2021-34790
MEDIUM 4.7

At a glance

Source
NVD
EPSS
EPSS 1.15 % · percentile 67 ()
State
PUBLISHED
Published
Updated
Assigner
cisco
NVD status
Modified

Description

Multiple vulnerabilities in the Application Level Gateway (ALG) for the Network Address Translation (NAT) feature of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass the ALG and open unauthorized connections with a host located behind the ALG. For more information about these vulnerabilities, see the Details section of this advisory. Note: These vulnerabilities have been publicly discussed as NAT Slipstreaming.

Weaknesses (CWE)

  • CWE-358 — Improperly Implemented Security Check for Standard
  • CWE-20 — Improper Input Validation

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 4.7CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:Ncisco
CVSS 3.1MEDIUM 4.7CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:NNVD · psirt@cisco.com (Secondary)
CVSS 3.1MEDIUM 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NNVD · nvd@nist.gov (Primary)
CVSS 2.0MEDIUM 5.0AV:N/AC:L/Au:N/C:N/I:P/A:NNVD · nvd@nist.gov (Primary)

European references

Affected configurations (NVD CPE)

Affected products

ProductVersions
Cisco · Cisco Adaptive Security Appliance (ASA) Softwareaffected n/a

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD