Cryptographic issues in openssl (Alpine package)

1) Cryptographic issues

EUVDB-ID: #VU23451

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-1551

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to an overflow issue within the rsaz_512_sqr(): the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. A remote attacker can perform an attack against DH512 keys.

Mitigation

Install update from vendor's website.

Vulnerable software versions

openssl (Alpine package): 1.0.2t-r0-r0 - 1.1.1b-r1

openssl (Alpine package):

CPE2.3

• cpe:2.3:o:alpine:openssl_alpine_package:1.0.2t-r0-r0:*:*:*:*:alpine_linux:*:3.7
• cpe:2.3:o:alpine:openssl_alpine_package:1.0.2n-r0-r0:*:*:*:*:alpine_linux:*:3.3
• cpe:2.3:o:alpine:openssl_alpine_package:1.0.2h-r0-r0:*:*:*:*:alpine_linux:*:3.2
• cpe:2.3:o:alpine:openssl_alpine_package::*:*:*:*:alpine_linux:*:*

External links

https://git.alpinelinux.org/aports/commit/?id=1e697147022325620c2e31c4417460f09c9df59d
https://git.alpinelinux.org/aports/commit/?id=a27739f065dcbb1cbd3d59a5afff5656ca312abc
https://git.alpinelinux.org/aports/commit/?id=d2ad91c7e3ded723ce9e34e95e66ad524f11833d
https://git.alpinelinux.org/aports/commit/?id=d5cdcefa208fa600971caccebd3ab1c7304fec16
https://git.alpinelinux.org/aports/commit/?id=33832d93c0d87e0c90f543ea973e7d12ea27a3ee

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.