SB2019040239 - Use-after-free in apache2 (Alpine package)
Published: April 2, 2019
Security Bulletin ID
SB2019040239
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2019-0196)
The vulnerability allows a remote attacker to perform denial of service attack.
The vulnerability exists due to a use-after-free error within the mod_http2 module when processing HTTP/2 requests. A remote attacker can make the application to access freed memory during string comparison when determining the method of a request and process the request incorrectly.
Successful exploitation of the vulnerability may allow an attacker to gain access to sensitive information or perform a denial of service attack.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=2352aedda7b946046e3bb408f94d6053f6468d74
- https://git.alpinelinux.org/aports/commit/?id=f69ef91711a9edd270c57081b8cd8230ad8fed24
- https://git.alpinelinux.org/aports/commit/?id=0342bb148db2b28dcced8a4c5b8e2840f3af9a44
- https://git.alpinelinux.org/aports/commit/?id=9d23763439dabef4a81c7cc9c061b69048df9708
- https://git.alpinelinux.org/aports/commit/?id=bbf41c02f848c8e5967bd857c6988274dc55f068
- https://git.alpinelinux.org/aports/commit/?id=ef86fbabe1c2c14cf06d8c26c6141b650e92049d