CVE-2020-26290

ADVISORY - github

Summary

Impact

The following vulnerabilities have been disclosed, which impact users leveraging the SAML connector:

Signature Validation Bypass (CVE-2020-15216): https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7

encoding/xml instabilities:

Patches

Immediately update to Dex v2.27.0.

Workarounds

There are no known workarounds.

EPSS Score: 0.005 (0.660)

Common Weakness Enumeration (CWE)

ADVISORY - nist

Improper Verification of Cryptographic Signature

ADVISORY - github

Improper Verification of Cryptographic Signature

ADVISORY - gitlab

OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities

Improper Verification of Cryptographic Signature

Improper Neutralization

OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities

ADVISORY - gitlab

OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities

Improper Handling of Syntactically Invalid Structure

Authentication Bypass by Spoofing

OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities


GitHub

CREATED

UPDATED

EXPLOITABILITY SCORE

2.8

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)

CVSS SCORE

9.3critical
PackageTypeOS NameOS VersionAffected RangesFix Versions
github.com/dexidp/dexgolang--<2.27.02.27.0
github.com/dexidp/dexgolang--<0.0.0-20201214084049-0f9e2888ab650.0.0-20201214084049-0f9e2888ab65
github.com/russellhaering/goxmldsiggolang--<1.1.01.1.0
github.com/russellhaering/goxmldsiggolang--<0.0.0-20200929150912-6f318b2f18250.0.0-20200929150912-6f318b2f1825

CVSS:3 Severity and metrics

The CVSS metrics represent different qualitative aspects of a vulnerability that impact the overall score, as defined by the CVSS Specification.

The vulnerable component is bound to the network stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared physical (e.g., Bluetooth or IEEE 802.11) or logical (e.g., local IP subnet) network, or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN to an administrative network zone). One example of an Adjacent attack would be an ARP (IPv4) or neighbor discovery (IPv6) flood leading to a denial of service on the local LAN segment (e.g., CVE-2013-6014).

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success when attacking the vulnerable component.

The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.

Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited. For example, a successful exploit may only be possible during the installation of an application by a system administrator.

An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.

There is a total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server.

There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any or all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.

There is no impact to availability within the impacted component.

NIST

CREATED

UPDATED

EXPLOITABILITY SCORE

2.8

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)

CVSS SCORE

9.3critical

Alpine

CREATED

UPDATED

EXPLOITABILITY SCORE

-

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
RATING UNAVAILABLE FROM ADVISORY

GoLang

CREATED

UPDATED

ADVISORY IDGO-2020-0050
EXPLOITABILITY SCORE

-

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
RATING UNAVAILABLE FROM ADVISORY

GitLab

CREATED

UPDATED

ADVISORY ID

CVE-2020-26290

EXPLOITABILITY SCORE

2.8

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)

CVSS SCORE

9.6critical

GitLab

CREATED

UPDATED

ADVISORY ID

CVE-2020-27847

EXPLOITABILITY SCORE

3.9

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)

CVSS SCORE

9.8critical

Chainguard

CREATED

UPDATED

ADVISORY ID

CGA-f6m3-cpmw-vj78

EXPLOITABILITY SCORE

-

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
RATING UNAVAILABLE FROM ADVISORY

Chainguard

CREATED

UPDATED

ADVISORY ID

CGA-w29q-h459-6537

EXPLOITABILITY SCORE

-

EXPLOITS FOUND
-
COMMON WEAKNESS ENUMERATION (CWE)-
RATING UNAVAILABLE FROM ADVISORY