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TI-2021-09336 Aliases CVE-2021-28091GHSA-5pxh-5p72-wvcm

Lasso all versions prior to 2.7.0 has improper verification of a cryptographic signature.

Priority LOW 36CWE-347Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 6 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-347.

Summary

Lasso all versions prior to 2.7.0 has improper verification of a cryptographic signature.

Why it matters now

EPSS 0.01379 72nd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 6 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:entrouvert:lasso:*:*:*:*:*:*:*:*before 2.7.0VulnerableEntr'ouvert
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*10.0VulnerableDebian
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*33VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
  • cpe:2.3:a:entrouvert:lasso:*:*:*:*:*:*:*:* Versions before 2.7.0 Vulnerable ·Entr'ouvert
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Debian
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* Versions 33 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject

Remediation

Red Hat 2 advisories

  • RHSA-2021:4325 Released 2021-11-09 · Red Hat rating Moderate
    lasso security and enhancement update
    • Red Hat CodeReady Linux Builder (v. 8) lasso-devel-2.6.0-12.el8
    • Red Hat Enterprise Linux AppStream (v. 8) lasso-2.6.0-12.el8
  • RHSA-2021:2989 Released 2021-08-02 · Red Hat rating Important
    lasso security update
    • Red Hat Enterprise Linux Server (v. 7) lasso-2.5.1-8.el7_9, lasso-2.5.1-8.el7_9.ppc, lasso-python-2.5.1-8.el7_9
    • Red Hat Enterprise Linux Server Optional (v. 7) lasso-devel-2.5.1-8.el7_9, lasso-devel-2.5.1-8.el7_9.ppc
    • Red Hat Enterprise Linux Workstation (v. 7) lasso-2.5.1-8.el7_9
    • Red Hat Enterprise Linux Workstation Optional (v. 7) lasso-devel-2.5.1-8.el7_9, lasso-python-2.5.1-8.el7_9

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2021:4325
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2021:4325
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2021:2989
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2021:2989
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2021:2989
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2021:2989
Not affected: 1 product
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-28091
  2. 2026-10-03 Alias added: GHSA-5pxh-5p72-wvcm

References

Patch 1

Advisory 5

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences