SB2017041163 - Out-of-bounds read in xen (Alpine package)
Published: April 11, 2017
Security Bulletin ID
SB2017041163
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2017-7228)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:P/U:Clear
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
An issue (known as XSA-212) was discovered in Xen, with fixes available for 4.8.x, 4.7.x, 4.6.x, 4.5.x, and 4.4.x. The earlier XSA-29 fix introduced an insufficient check on XENMEM_exchange input, allowing the caller to drive hypervisor memory accesses outside of the guest provided input/output arrays.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=2aae6d20dcc445e55f3afde8a9c1c91f9bb4b7f5
- https://git.alpinelinux.org/aports/commit/?id=aa5f8776542923a6004a10095d7c75435c70d3df
- https://git.alpinelinux.org/aports/commit/?id=5a58568f86fb352acf6c7598f8c7fdf05749676a
- https://git.alpinelinux.org/aports/commit/?id=abd894aa9e7936d2fab2956aef4da42c08d8874a
- https://git.alpinelinux.org/aports/commit/?id=da85ca277a6878be7b6a40d6904d52c522ed214d