Out-of-bounds Read in F5 Njs
CVE-2019-13617
njs through 0.3.3, used in NGINX, has a heap-based buffer over-read in nxt_vsprintf in nxt/nxt_sprintf.c during error handling, as demonstrated by an njs_regexp_literal call that leads to an njs_parser_lexer_error call and then an njs_parser_scope_error call.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.013 (69.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/nginx/njs/issues/174 (Exploit, Third Party Advisory)
- bugs.chromium.org/p/oss-fuzz/issues/detail (Permissions Required, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-13617?
- CVE-2019-13617 is a medium-severity vulnerability in F5 Njs, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2019-07-16.
- How severe is CVE-2019-13617?
- Medium severity. CVSS v3 base score is 6.5 out of 10.