CVE-2019-16255: debian debian_linux Improper Control of Generation of Code
Vulnerability summary
CVE-2019-16255 is a high (CVSS 8.1) Improper Control of Generation of Code vulnerability in debian debian_linux. EPSS estimates a 4.19% chance of exploitation in the next 30 days, higher than 90.9% of scored vulnerabilities. 1 public exploit is recorded.
Public exploit (reference, Date unknown)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 18 · Related 4Timeline
- 26-11-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument (aka the "command" argument) to Shell#[] or Shell#test in lib/shell.rb is untrusted data. An attacker can exploit this to call an arbitrary Ruby method.
CVSS metrics
5 scores · 4 sources · 2 versions- OSV · AlpineEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
4.19%
Chance of exploitation in the next 30 days
Percentile
91%
Versus all other CVEs
30-day change
No change 0.00 pp
From 4.19% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
1 foundExploit Reference (hackerone.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Ubuntu3 products
- jruby< 1.5.6-9+deb8u2build0.14.04.1~esm2 | All versions (No fix recorded)
- ruby2.3< 2.3.1-2~ubuntu16.04.14
- ruby2.5< 2.5.1-1ubuntu1.6
Debian2 products
- jruby< 9.3.9.0+ds-1
- debian_linuxEOL8.0 | 9.0
Alpine1 product
- ruby≥ 2.4.0, < 2.5.7-r0 | ≥ 2.4.0, < 2.6.5-r0 | ≥ 2.4.0, < 2.4.10-r0
Opensuse1 product
- leapEOL15.1
Oracle1 product
- graalvm19.3.0.2
Ruby-lang1 product
- ruby≥ 2.4.0, ≤ 2.4.7 | ≥ 2.5.0, ≤ 2.5.6 | ≥ 2.6.0, ≤ 2.6.4
6 vendors · 9 products
References
22 linksShow all 22 references
- lists.opensuse.org/opensuse-security-announce/2020-03/msg00041.htmlVendor AdvisoryThird Party Advisory
