Out-of-bounds read in podofo (Alpine package)

1) Out-of-bounds read

EUVDB-ID: #VU39287

Risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-7379

CWE-ID: CWE-125 - Out-of-bounds read

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 in The PoDoFo::PdfSimpleEncoding::ConvertToEncoding function in PdfEncoding.cpp in PoDoFo 0.9.5. A remote attacker can perform a denial of service (heap-based buffer over-read and application crash) via a crafted PDF document.

Mitigation

Install update from vendor's website.

Vulnerable software versions

podofo (Alpine package): 0.9.5-r0 - 0.9.6-r2

CPE2.3

• cpe:2.3:a:alpine:podofo_alpine_package:0.9.5-r0:*:*:*:*:alpine_linux:*:3.4
• cpe:2.3:a:alpine:podofo_alpine_package:0.9.5-r1:*:*:*:*:alpine_linux:*:3.5
• cpe:2.3:a:alpine:podofo_alpine_package:0.9.6-r2:*:*:*:*:alpine_linux:*:3.12

External links

https://git.alpinelinux.org/aports/commit/?id=ee0f0c39b80c484343973f2cbc7b0b2cdc0f9532

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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