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CVE-2017-6553: Quest Privilege Manager For Unix: Buffer overflow

CVE-2017-6553 is rated critical with a CVSS v3.0 base score of 9.8 and affects Quest Privilege Manager For Unix. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

Buffer Overflow in Quest One Identity Privilege Manager for Unix before 6.0.0.061 allows remote attackers to obtain full access to the policy server via an ACT_ALERT_EVENT request that causes memory corruption in the pmmasterd daemon.

Severity breakdown

CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

• Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
• Attack complexity: Low. No special conditions; the attack can be repeated reliably.
• Privileges required: None. No account or prior access is needed.
• User interaction: None. No action from any user is needed.
• Scope: Unchanged. Impact stays within the vulnerable component.
• Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
• Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
• Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.

Affected products

• Quest Privilege Manager For Unix: up to and including 6.0.0-50

References

• https://support.oneidentity.com/privilege-manager-for-unix/kb/SOL133824
• https://0xdeadface.wordpress.com/2017/04/07/multiple-vulnerabilities-in-quest-privilege-manager-6-0-0-xx-cve-2017-6553-cve-2017-6554/
• https://www.exploit-db.com/exploits/42010/