Buffer overflow in libpcap (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU21950

Risk: Low

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

CVE-ID: CVE-2019-15165

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the sf-pcapng.c in libpcap when processing the PHB header length before allocating memory. A remote attacker can pass specially crafted data to the application that uses the vulnerable library, trigger memory corruption and perform denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Tivoli Storage Manager: 6.3.2.2

libpcap (Alpine package): 1.57

libpcap (Alpine package): 6.x-1.0 rc2

libpcap (Alpine package): 7.4

libpcap (Alpine package): 1.3.0

libpcap (Alpine package): 1.0

libpcap (Alpine package): 5.2 10B144b

libpcap (Alpine package): 5.1.40416.0

libpcap (Alpine package):

libpcap (Alpine package): before 1.9.1-r0

CPE2.3

• cpe:2.3:a:ibm_corporation:ibm_tivoli_storage_manager:6.3.2.2:*:*:*:*:*:*:*
• cpe:2.3:o:alpine:libpcap_alpine_package:1.57:*:*:*:*:alpine_linux:*:*
• cpe:2.3:o:alpine:libpcap_alpine_package:6.x-1.0:rc2:*:*:*:alpine_linux:*:*
• cpe:2.3:o:alpine:libpcap_alpine_package:7.4:*:*:*:*:alpine_linux:*:*
• cpe:2.3:o:alpine:libpcap_alpine_package:1.3.0:*:*:*:*:alpine_linux:*:*
• cpe:2.3:o:alpine:libpcap_alpine_package:1.0:*:*:*:*:alpine_linux:*:*
• cpe:2.3:o:alpine:libpcap_alpine_package:5.2:10B144b:*:*:*:alpine_linux:*:*
• cpe:2.3:o:alpine:libpcap_alpine_package:5.1.40416.0:*:*:*:*:alpine_linux:*:*
• cpe:2.3:o:alpine:libpcap_alpine_package::*:*:*:*:alpine_linux:*:*
• cpe:2.3:o:alpine:libpcap_alpine_package:*:*:*:*:*:alpine_linux:*:3.10

External links

http://git.alpinelinux.org/aports/commit/?id=1fae24b93ade70ed9d42db767057441a5bf8b280
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.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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