SB2019041741 - Permissions, Privileges, and Access Controls in libxslt (Alpine package)
Published: April 17, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-11068)
The vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to an error within the xsltCheckRead() and xsltCheckWrite() functions when processing requests from remote servers. A remote attacker can trick the victim into opening a specially crafted URL that will result in "-1 error" code but the URL itself will be processed by the application later.
Successful exploitation of the vulnerability may allow an attacker to bypass certain security restrictions and perform XXE attacks.Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=36f4bd78050ec6ce2ad65444031df6c1f3db5cc9
- https://git.alpinelinux.org/aports/commit/?id=15d065f8bf5e73b1d88ca046d99933d217781aab
- https://git.alpinelinux.org/aports/commit/?id=4281a184d7a2aab9a0f2352a418084cad73ee2dc
- https://git.alpinelinux.org/aports/commit/?id=5f61e0e106315c69b9cec8e394286e8cf98c99e2
- https://git.alpinelinux.org/aports/commit/?id=8b51ccff6e6b617759f391802b960f04ef4adf46
- https://git.alpinelinux.org/aports/commit/?id=e0bf68014c8449196d77264ba2cc6a040051be9a
- https://git.alpinelinux.org/aports/commit/?id=ef2dd8d40fec766b73bb686c015aa9e2a52b378b