Heap-Based Buffer Over-Read in LibreSSL Product from OpenBSD
CVE-2019-25048

7.1HIGH

Key Information:

Vendor

OpenBSD
Status
Libressl
Vendor
CVE Published:
1 July 2021

What is CVE-2019-25048?

OpenBSD's LibreSSL versions ranging from 2.9.1 to 3.2.1 are subject to a heap-based buffer over-read vulnerability stemming from the do_print_ex function. This issue arises during the execution of ASN.1 item printing functions, potentially allowing attackers to read sensitive data from memory. The flawed handling of input can lead to unintended data exposure, raising concerns for applications reliant on these versions of LibreSSL.

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References

https://github.com/libressl-portable/portable/commit/17c8...
x_refsource_MISC
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=13914
x_refsource_MISC
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/...
x_refsource_MISC

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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