Null pointer dereference in apache2 (Alpine package)



Published: 2018-03-27
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-1302
CWE-ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
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apache2 (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Null pointer dereference

EUVDB-ID: #VU11287

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-1302

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The weakness exists due to improper destruction of an HTTP/2 stream after being handled. A remote attacker can send a specially crafted HTTP/2 stream, write a NULL pointer value to an already freed memory space and cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

apache2 (Alpine package): 2.4.4-r0 - 2.4.29-r1

External links

http://git.alpinelinux.org/aports/commit/?id=745c279a27c099e33067e550773bdc49d7d3da2e
http://git.alpinelinux.org/aports/commit/?id=a30dbd55635b5e5c03db10c63ac61a2a9b3c3b05
http://git.alpinelinux.org/aports/commit/?id=c976cfb3d3e83caaa82a05bc37b1c1a6e6b3ea1c
http://git.alpinelinux.org/aports/commit/?id=fc2557dadf48a27feaa29261edcaa62ea4fc367e


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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