PT-2021-9101 · Openssl · Libressl

Published 2021-06-30 · Updated 2021-07-08 · CVE-2019-25049

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Name of the Vulnerable Software and Affected Versions LibreSSL versions 2.9.1 through 3.2.1

Description The issue is related to an out-of-bounds read in the asn1 item print ctx function, which is called from asn1 template print ctx.

Recommendations For versions 2.9.1 through 3.2.1, consider disabling the asn1 item print ctx function as a temporary workaround until a patch is available. Restrict access to the asn1 template print ctx function to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2019-25049

Affected Products

Libressl

References · 6

• 🔥 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=13920 · Exploit
• https://github.com/libressl-portable/portable/commit/17c88164016df821df2dff4b2b1291291ec4f28a · Patch
• https://osv.dev/vulnerability/CVE-2019-25049 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-25049 · Security Note
• https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libressl/OSV-2020-1965.yaml · Note
• https://t.me/cvenotify/17274 · Telegram Post