CVE-2017-5923 — Out-of-bounds Read in Yara

CWE-125 — Out-of-bounds Read10 documents7 sources
Severity
7.5HIGHNVD
EPSS
0.8%
top 26.14%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Virustotal Yara
Timeline
PublishedApr 3
Latest updateMar 9

Description

libyara/grammar.y in YARA 3.5.0 allows remote attackers to cause a denial of service (heap-based out-of-bounds read and application crash) via a crafted rule that is mishandled in the yara_yyparse function.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶Debianvirustotal/yara< 3.5.0+dfsg-9+3
▶Ubuntuvirustotal/yara< 3.4.0+dfsg-2ubuntu0.1~esm1+2
▶NVDvirustotal/yara3.5.0

Patches

Patch: github.com ↗Patch: github.com ↗Patch: github.com ↗

🔴Vulnerability Details

4
OSV
yara vulnerabilities↗2026-03-09
▶
GHSA
GHSA-x9r6-fxx3-q7m8: libyara/grammar↗2022-05-17
▶
OSV
CVE-2017-5923: libyara/grammar↗2017-04-03
▶
CVEList
CVE-2017-5923: libyara/grammar↗2017-04-03
▶

📋Vendor Advisories

2
Ubuntu
YARA vulnerabilities↗2026-03-09
▶
Debian
CVE-2017-5923: yara - libyara/grammar.y in YARA 3.5.0 allows remote attackers to cause a denial of ser...↗2017
▶

💬Community

3
Bugzilla
CVE-2016-10210 CVE-2016-10211 CVE-2017-5923 CVE-2017-5924 yara: Multiple security issues [epel-all]↗2017-04-10
▶
Bugzilla
CVE-2017-8294 CVE-2017-5924 CVE-2017-5923 CVE-2016-10210 CVE-2016-10211 yara: Multiple security issues↗2017-04-10
▶
Bugzilla
CVE-2016-10210 CVE-2016-10211 CVE-2017-5923 CVE-2017-5924 yara: Multiple security issues [fedora-all]↗2017-04-10
▶
CVE-2017-5923 — Out-of-bounds Read in Virustotal Yara | cvebase