CVE-2019-25048 : LibreSSL 2.9.1 through 3.2.1 has a heap-based buffer over-read in do_print

LibreSSL 2.9.1 through 3.2.1 has a heap-based buffer over-read in do_print_ex (called from asn1_item_print_ctx and ASN1_item_print).

Published 2021-07-01 03:15:08

Updated 2021-07-08 12:31:06

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2019-25048

Openbsd » Libressl
Versions from including (>=) 2.9.1 and up to, including, (<=) 3.2.1
cpe:2.3:a:openbsd:libressl:*:*:*:*:*:*:*:*
Matching versions
When used together with: Linux » Linux Kernel » Version: N/A

EPSS FAQ

0.22%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 42 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.8	MEDIUM	AV:N/AC:M/Au:N/C:P/I:N/A:P	8.6	4.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: Partial Integrity Impact: None Availability Impact: Partial
7.1	HIGH	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H	1.8	5.2	NIST
Attack Vector: Local Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Unchanged Confidentiality: High Integrity: None Availability: High

CWE-125 Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

Assigned by: nvd@nist.gov (Primary)

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=13914

13914 - libressl/asn1: Heap-buffer-overflow in do_print_ex - oss-fuzz
Exploit;Issue Tracking;Patch;Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libressl/OSV-2020-1923.yaml

oss-fuzz-vulns/OSV-2020-1923.yaml at main · google/oss-fuzz-vulns · GitHub
Third Party Advisory
https://github.com/libressl-portable/portable/commit/17c88164016df821df2dff4b2b1291291ec4f28a

Make pthread_mutex static initialisation work on Windows. · libressl-portable/portable@17c8816 · GitHub
Patch;Third Party Advisory

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