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cloudfoundryCloud FoundryCFOUNDRY:6AAA637C3916EA2A44D93B95BEA9728B
HistoryApr 29, 2021 - 12:00 a.m.

USN-4898-1: curl vulnerabilities | Cloud Foundry

2021-04-2900:00:00
Cloud Foundry
www.cloudfoundry.org
17

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.012 Low

EPSS

Percentile

85.0%

Severity

Medium

Vendor

Canonical Ubuntu

Versions Affected

  • Canonical Ubuntu 16.04
  • Canonical Ubuntu 18.04

Description

Viktor Szakats discovered that curl did not strip off user credentials from referrer header fields. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2021-22876)

Mingtao Yang discovered that curl incorrectly handled session tickets when using an HTTPS proxy. A remote attacker in control of an HTTPS proxy could use this issue to bypass certificate checks and intercept communications. This issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10. (CVE-2021-22890)

CVEs contained in this USN include: CVE-2021-22890, CVE-2021-22876.

Affected Cloud Foundry Products and Versions

Severity is medium unless otherwise noted.

  • cflinuxfs3
    • All versions prior to 0.233.0
  • Xenial Stemcells
    • 456.x versions prior to 456.158
    • 621.x versions prior to 621.123
    • All other stemcells not listed.
  • CF Deployment
    • All versions prior to 16.13.0

Mitigation

Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:

  • cflinuxfs3
    • Upgrade all versions to 0.233.0 or greater
  • Xenial Stemcells
    • Upgrade 456.x versions to 456.158 or greater
    • Upgrade 621.x versions to 621.123 or greater
    • All other stemcells should be upgraded to the latest version available on bosh.io.
  • CF Deployment
    • Upgrade all versions to 16.13.0 or greater

References

History

2021-04-29: Initial vulnerability report published.

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.012 Low

EPSS

Percentile

85.0%

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