NULL pointer dereference in libpcap (Alpine package)



Published: 2019-10-03
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-15163
CWE-ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
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libpcap (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: #VU22310

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-15163

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dreference error within the rpcapd/daemon.c in libpcap if a crypt() call fails. A remote attacker can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libpcap (Alpine package): 1.9.0-r1

External links

http://git.alpinelinux.org/aports/commit/?id=43630260e7496764500acd52f55ccf1a96ea3095
http://git.alpinelinux.org/aports/commit/?id=afa32cc79b9e40d4a1612be4abc04540bf1f3e45


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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