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Cryptographic Issues Affecting krb5 package, versions <1.8.3+dfsg-3

Severity

 Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.25% (65th percentile)

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  • Snyk ID SNYK-DEBIAN10-KRB5-395903
  • published 2 Dec 2010
  • disclosed 2 Dec 2010
Report a new vulnerability Found a mistake?

Introduced: 2 Dec 2010

CVE-2010-4020 Open this link in a new tab
CWE-310 Open this link in a new tab

How to fix?

Upgrade Debian:10 krb5 to version 1.8.3+dfsg-3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5 package and not the krb5 package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

MIT Kerberos 5 (aka krb5) 1.8.x through 1.8.3 does not reject RC4 key-derivation checksums, which might allow remote authenticated users to forge a (1) AD-SIGNEDPATH or (2) AD-KDC-ISSUED signature, and possibly gain privileges, by leveraging the small key space that results from certain one-byte stream-cipher operations.

References

CVSS Scores

version 3.1
Expand this section

Red Hat

3.5 low
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    Required
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    Low
  • Availability (A)
    None