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Vulnerability record · CVE-2009-0050 · published 7 January 2009

CVE-2009-0050: Entrouvert lasso improper input validation vulnerability

EEntrouvert · Lasso

Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.

4.3 CVSS 2.0 Medium EPSS 1.3% · top 29.9% CWE-20 · Improper input validation
4.3CVSS 2.0 base score
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

Lasso 2.2.1 and earlier does not properly check the return value from the OpenSSL DSA_verify function, which allows remote attackers to bypass validation of the certificate chain via a malformed SSL/TLS signature, a similar vulnerability to CVE-2008-5077.

AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.ocert.org/advisories/ocert-2008-016.html
http://www.securityfocus.com/archive/1/499827/100/0/threaded
https://exchange.xforce.ibmcloud.com/vulnerabilities/47837
http://www.ocert.org/advisories/ocert-2008-016.html
http://www.securityfocus.com/archive/1/499827/100/0/threaded
https://exchange.xforce.ibmcloud.com/vulnerabilities/47837

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2025-47151Entrouvert lasso type confusion vulnerabilityA type confusion vulnerability exists in the lasso_node_impl_init_from_xml functionality of Entr'ouvert Lasso 2.5.1 and 2.8.2. A specially crafte…EPSS 1.1%7.5CVE-2025-46784Entrouvert lasso memory leak vulnerabilityA denial of service vulnerability exists in the lasso_node_init_from_message_with_format functionality of Entr'ouvert Lasso 2.5.1. A specially cr…EPSS 0.59%7.5CVE-2025-46705Entrouvert lasso vulnerabilityA denial of service vulnerability exists in the g_assert_not_reached functionality of Entr'ouvert Lasso 2.5.1 and 2.8.2. A specially crafted SAML…EPSS 0.57%7.5CVE-2025-46404Entrouvert lasso null pointer dereference vulnerabilityA denial of service vulnerability exists in the lasso_provider_verify_saml_signature functionality of Entr'ouvert Lasso 2.5.1. A specially crafte…EPSS 0.59%7.5CVE-2021-28091Entrouvert lasso improper verification of cryptographic signature vulnerabilityLasso all versions prior to 2.7.0 has improper verification of a cryptographic signature.EPSS 1.3%7.5CVE-2015-1783Fedoraproject fedora memory buffer overflow vulnerabilityThe prefix variable in the get_or_define_ns function in Lasso before commit 6d854cef4211cdcdbc7446c978f23ab859847cdd allows remote attackers to cause…EPSS 3.5%9.5CVE-2026-88771Citrix NetScaler Improper Input Validation VulnerabilityImproper input validation vulnerability in Citrix NetScaler ADC and Citrix NetScaler Gateway. This issue affects ADC: before 14.1-73.37, before 13.1-…KEV9.5CVE-2026-93952Arista velocloud orchestrator improper input validation vulnerabilityVeloCloud Orchestrator (VCO) on-prem has a security issue where this issue may allow a remote attacker to access privileged internal functionality an…KEVEPSS 0.90%

Source: NIST National Vulnerability Database (record CVE-2009-0050), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.