Red Hat Satellite 5.8 update for spacewalk-backend

1) Improper Verification of Cryptographic Signature

EUVDB-ID: #VU25420

Risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-10136

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass signature validation process.

The vulnerability exists due to the affected software does not safely compute client token checksums. A remote attacker with a valid, but expired, authenticated set of headers can move some digits around, artificially extending the session validity without modifying the checksum.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Satellite: 5.8

spacewalk-backend (Red Hat package): before 2.5.3-177.el6sat

CPE2.3

• cpe:2.3:a:red_hat:red_hat_satellite:5.8:*:*:*:*:*:*:*
• cpe:2.3:o:red_hat:spacewalk-backend_redhat_package:*:*:*:*:*:red_hat_enterprise_linux:*:*

External links

https://access.redhat.com/errata/RHSA-2019:1661

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.