SB2019070221 - Multiple vulnerabilities in Red Hat Spacewalk

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2019-10136)

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.

2) XML External Entity injection (CVE-ID: CVE-2020-1693)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied XML input in the "/rpc/api" endpoint. A remote attacker can pass a specially crafted XML code to the affected application, retrieve the content of certain files and trigger a denial of service, or in certain circumstances, execute arbitrary code on the Spacewalk server.

Remediation

Cybersecurity Help is not aware of any official remediation provided by the vendor.

References

• http://www.securityfocus.com/bid/109029
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10136
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1693
• https://github.com/spacewalkproject/spacewalk/commit/74e28ec61d916c42061ef4347121650a1c962b0c