SB2019090647 - Use-after-free in firefox-esr (Alpine package)
Published: September 6, 2019
Security Bulletin ID
SB2019090647
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2019-11746)
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error while manipulating video elements if the body is freed while still in use. A remote attacker can create a specially crafted website, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system with privileges of the current user.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=df118d5706ba2d60b54d1285b0c2544abd2dc984
- https://git.alpinelinux.org/aports/commit/?id=ebf9184f5bbef1f9faab710ffb48bb36b5bae10e
- https://git.alpinelinux.org/aports/commit/?id=e5cf7735a9421cc3029ffa0ffda33135ab64ac6a
- https://git.alpinelinux.org/aports/commit/?id=6f6dc3727e020934d6a5a3d10fe2b591bd4c305a
- https://git.alpinelinux.org/aports/commit/?id=0022d15ae85827001bd50d87a374fd81eb56167b