[pkg-go] Bug#971556: golang-github-dgrijalva-jwt-go: CVE-2020-26160

[Salvatore Bonaccorso]

Source: golang-github-dgrijalva-jwt-go
Version: 3.2.0-1
Severity: grave
Tags: security upstream
X-Debbugs-Cc: carnil at debian.org, Debian Security Team <team at security.debian.org>

Hi,

The following vulnerability was published for golang-github-dgrijalva-jwt-go.

CVE-2020-26160[0]:
| jwt-go before 4.0.0-preview1 allows attackers to bypass intended
| access restrictions in situations with []string{} for m["aud"] (which
| is allowed by the specification). Because the type assertion fails, ""
| is the value of aud. This is a security problem if the JWT token is
| presented to a service that lacks its own audience check.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2020-26160
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26160
[1] https://snyk.io/vuln/SNYK-GOLANG-GITHUBCOMDGRIJALVAJWTGO-596515

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore