CVE-2017-15038

Description

Race condition in the v9fs_xattrwalk function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS users to obtain sensitive information from host heap memory via vectors related to reading extended attributes.

CVSS Metrics

• v3.0•MEDIUM•Score: 5.6CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
• v2.0•LOW•Score: 1.9AV:L/AC:M/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.03%• Percentile: 9%

Techniques & Countermeasures

• CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

  The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected Systems

• qemu•qemu

  ≤ 2.9.1

References (5)

• https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
• https://www.debian.org/security/2018/dsa-4213
• https://lists.gnu.org/archive/html/qemu-devel/2017-10/msg00729.html
• https://usn.ubuntu.com/3575-1/
• http://www.openwall.com/lists/oss-security/2017/10/06/1