SB2018110744 - Resource management error in nginx (Alpine package)
Published: November 7, 2018
Security Bulletin ID
SB2018110744
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) Resource management error (CVE-ID: CVE-2018-16843)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to excessive memory usage when processing HTTP/2 requests within the ngx_http_v2_module module. A remote attacker can send specially crafted HTTP/2 requests to the affected web server and consume all available memory on the system and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=6e8dc30ce258648d95eb57892b407d0ae7b72981
- https://git.alpinelinux.org/aports/commit/?id=cbfc890c785c113b462f0cb5bbbe873503b00c9f
- https://git.alpinelinux.org/aports/commit/?id=45003dac9059e38b73687135bba6c67874b992a2
- https://git.alpinelinux.org/aports/commit/?id=820edddd99fb21127b48d61ab5bcf8705d1b03b6
- https://git.alpinelinux.org/aports/commit/?id=e86a2a9f72ca3473b25cd7ae7085d79c368615b0
- https://git.alpinelinux.org/aports/commit/?id=6b75c937d616093cfc19f88eb23252e393cc3307
- https://git.alpinelinux.org/aports/commit/?id=e104e0f441e5234364ca25e6467d1b1e30766f17