What is CVE-2017-7523?

CVE-2017-7523 is a high-severity vulnerability in Cygwin, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2017-07-21.

How severe is CVE-2017-7523?

High severity. CVSS v3 base score is 7.5 out of 10.

Buffer overflow in Cygwin

CVE-2017-7523

Cygwin versions 1.7.2 up to and including 1.8.0 are vulnerable to buffer overflow vulnerability in wcsxfrm/wcsxfrm_l functions resulting into denial-of-service by crashing the process or potential hijack of the process running with administrative privileges triggered by specially crafted input string.

Vulnerability class: Buffer Overflow

EPSS: 0.027 (84.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Cygwin — versions 1.7.2, 1.7.3, 1.7.5
Red Hat, Inc. Cygwin — versions since 1.7.2 up to 2.8.0

Weakness classification (CWE)

References

secalert@redhat.com (Exploit, Mailing List, x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2017-7523?: CVE-2017-7523 is a high-severity vulnerability in Cygwin, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2017-07-21.
How severe is CVE-2017-7523?: High severity. CVSS v3 base score is 7.5 out of 10.