Denial of service in nghttp2



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-1000168
CWE-ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
 nghttp2
Universal components / Libraries / Libraries used by multiple products

Vendor nghttp2

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU11858

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-1000168

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated attacker to cause DoS condition on the target system.

The weakness exists due to improper bounds checking. If an alternative services (ALTSVC) frame is too large, the pointer field that points to the ALTSVC frame payload is left NULL. A remote attacker can submit a large ALTSVC frame, trigger a NULL pointer dereference and cause the service to crash.

Mitigation

Update to version 1.31.1.

Vulnerable software versions

nghttp2: 1.10.0 - 1.31.0

CPE2.3 External links

https://nghttp2.org/blog/2018/04/12/nghttp2-v1-31-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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