Buffer overflow in perl (Alpine package)

1) Buffer overflow

EUVDB-ID: #VU29016

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-12723

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the recursive "S_study_chunk" calls. A remote attacker can use a specially crafted regular expression , trigger memory corruption and cause a denial of service condition on the target system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

WordPress Gallery Plugin - NextGEN Gallery: 2.1.0

perl (Alpine package): 0.8.9 - 1.2.1

perl (Alpine package): 1.1.47

perl (Alpine package): 20101020ubuntu213 - 20101020ubuntu451.6

perl (Alpine package): 0.2.69 - 1.4.41

perl (Alpine package): 0.0.1daily13.06.18-0ubuntu1 - 5.0.0-0ubuntu2

perl (Alpine package): 0.4.17 - 0.5.8-1

perl (Alpine package): 0.2.12-1

perl (Alpine package): 7.11.0-3 - 7.26.0-1ubuntu1

perl (Alpine package): 1.0.59-1

perl (Alpine package): 0.7.1-0ubuntu4 - 0.7.1-0ubuntu5

perl (Alpine package): 2.01-1

perl (Alpine package): 4.1-2851

perl (Alpine package): 2.5.1

perl (Alpine package): 1.4.12.1

perl (Alpine package): 2.1.4

perl (Alpine package): 0.7.7

perl (Alpine package): 7.6.6

perl (Alpine package):

perl (Alpine package): before 5.26.3-r1

CPE2.3

• cpe:2.3:a:imagely:nextgen-gallery:2.1.0:*:*:*:*:wordpress:*:*
• cpe:2.3:a:alpine:perl_alpine_package:0.8.9:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:1.2.1:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:1.1.47:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:20101020ubuntu213:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:20101020ubuntu306:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:20101020ubuntu307:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:0.2.69:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:0.2.70:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:0.9.74:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:0.0.1daily13.06.18-0ubuntu1:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:0.4.17:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:0.2.12-1:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:7.11.0-3:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:1.0.59-1:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:0.7.1-0ubuntu4:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:2.01-1:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:4.1-2851:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:2.5.1:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:1.4.12.1:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:2.1.4:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:0.7.7:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:7.6.6:*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package::*:*:*:*:alpine_linux:*:*
• cpe:2.3:a:alpine:perl_alpine_package:*:*:*:*:*:alpine_linux:*:3.9

External links

https://git.alpinelinux.org/aports/commit/?id=2347c5642490c5f7dc79c2205fff672b7bf5a3f6
https://git.alpinelinux.org/aports/commit/?id=2db22e01ffdcff6cb673b0f5660cb911cff79bc1
https://git.alpinelinux.org/aports/commit/?id=d5907c68b2341579983e3fc9a25ac4b67162c994
https://git.alpinelinux.org/aports/commit/?id=f4e478f351ceedb178ec76b3b5ba2b2defdf99c8
https://git.alpinelinux.org/aports/commit/?id=0bae63fd8d47db4b5bf4e1407c139f804fa62f4f

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.