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CVE-2018-12474: Opensuse Tar Scm: Improper Input Validation

CVE-2018-12474 is rated critical with a CVSS v3.0 base score of 9.8 and affects Opensuse Tar Scm. 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

Improper input validation in obs-service-tar_scm of Open Build Service allows remote attackers to cause access and extract information outside the current build or cause the creation of file in attacker controlled locations. Affected releases are openSUSE Open Build Service: versions prior to 51a17c553b6ae2598820b7a90fd0c11502a49106.

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-20: Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected products

  • Opensuse Tar Scm: before 0.9.3

References