CVE-2021-43809
Local Code Execution through Argument Injection via dash leading git url parameter in Gemfile
02 Description
Local Code Execution through Argument Injection via dash leading git url parameter in Gemfile
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.90% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 86.5% of scored records. A rank, not a probability.
- NVD base score
- 7.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-12-08 18:50Z4 YR AGO
- Last updated
- 2025-11-03 19:26Z12 MO AGO
- Reserved
- 2021-11-16
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.7)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')Base
- Data version
- 5.2
- Document digest
- 0483b30084ef74150efdaabc71415d9d39ed89d994be7ffc2542eda36e28e452
05 Affected products
06 References
- github.comhttps://github.com/rubygems/rubygems/security/advisories/GHSA-fj7f-vq84-fh43
- github.comhttps://github.com/rubygems/rubygems/pull/5142
- github.comhttps://github.com/rubygems/rubygems/commit/0fad1ccfe9dd7a3c5b82c1496df3c2b4842870d3
- github.comhttps://github.com/rubygems/rubygems/commit/a4f2f8ac17e6ce81c689527a8b6f14381060d95f
- www.sonarsource.comhttps://www.sonarsource.com/blog/securing-developer-tools-package-managers/
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/05/msg00015.html
07 Fixed in
AlmaLinux 8
- ruby Fixed in 2.5.9-114.module_el8.10.0+3991+5e651d4e
- ruby-devel Fixed in 2.5.9-114.module_el8.10.0+3991+5e651d4e
- ruby-doc Fixed in 2.5.9-114.module_el8.10.0+3991+5e651d4e
- ruby-irb Fixed in 2.5.9-114.module_el8.10.0+3991+5e651d4e
- ruby-libs Fixed in 2.5.9-114.module_el8.10.0+3991+5e651d4e
- rubygem-abrt Fixed in 0.3.0-4.module_el8.5.0+2625+ec418553
- rubygem-abrt-doc Fixed in 0.3.0-4.module_el8.10.0+3871+342e2c2f
- rubygem-bigdecimal Fixed in 1.3.4-114.module_el8.10.0+3991+5e651d4e
- rubygem-bson Fixed
A version is affected if any line below covers it.
- Affected before 4.3.0-2.module_el8.5.0+259+8cec6917
- Affected before 4.3.0-2.module_el8.5.0+2625+ec418553
- Affected before 4.3.0-2.module_el8.6.0+3170+4b08f9d4
- rubygem-bson-doc Fixed in 4.3.0-2.module_el8.5.0+2625+ec418553
- rubygem-bundler Fixed in 1.16.1-5.module_el8.10.0+3991+5e651d4e
- rubygem-bundler-doc Fixed in 1.16.1-5.module_el8.10.0+3991+5e651d4e
- rubygem-did_you_mean Fixed in 1.2.0-114.module_el8.10.0+3991+5e651d4e
- rubygem-io-console Fixed in 0.4.6-114.module_el8.10.0+3991+5e651d4e
- rubygem-json Fixed in 2.1.0-114.module_el8.10.0+3991+5e651d4e
- rubygem-minitest Fixed in 5.10.3-114.module_el8.10.0+3991+5e651d4e
- rubygem-mongo Fixed in 2.5.1-2.module_el8.5.0+2625+ec418553
- rubygem-mongo-doc Fixed in 2.5.1-2.module_el8.5.0+2625+ec418553
- rubygem-mysql2 Fixed
A version is affected if any line below covers it.
- Affected before 0.4.10-4.module_el8.5.0+259+8cec6917
- Affected before 0.4.10-4.module_el8.5.0+2625+ec418553
- Affected before 0.4.10-4.module_el8.6.0+3170+4b08f9d4
- rubygem-mysql2-doc Fixed in 0.4.10-4.module_el8.5.0+2625+ec418553
- rubygem-net-telnet Fixed in 0.1.1-114.module_el8.10.0+3991+5e651d4e
- rubygem-openssl Fixed in 2.1.2-114.module_el8.10.0+3991+5e651d4e
- rubygem-pg Fixed in 1.0.0-3.module_el8.9.0+3635+c6f99506
- rubygem-pg-doc Fixed in 1.0.0-3.module_el8.9.0+3635+c6f99506
- rubygem-power_assert Fixed in 1.1.1-114.module_el8.10.0+3991+5e651d4e
- rubygem-psych Fixed in 3.0.2-114.module_el8.10.0+3991+5e651d4e
- rubygem-rake Fixed in 12.3.3-114.module_el8.10.0+3991+5e651d4e
- rubygem-rdoc Fixed in 6.0.1.1-114.module_el8.10.0+3991+5e651d4e
- rubygem-test-unit Fixed in 3.2.7-114.module_el8.10.0+3991+5e651d4e
- rubygem-xmlrpc Fixed in 0.3.0-114.module_el8.10.0+3991+5e651d4e
- rubygems Fixed in 2.7.6.3-114.module_el8.10.0+3991+5e651d4e
- rubygems-devel Fixed in 2.7.6.3-114.module_el8.10.0+3991+5e651d4e
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Arch Linux
- ruby-bundler No fix yet
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
CloudLinux 8
- ruby Fixed in 2.5.9-114.module_el8.10.0+3991+5e651d4e
- ruby-devel Fixed in 2.5.9-114.module_el8.10.0+3991+5e651d4e
- ruby-doc Fixed in 2.5.9-114.module_el8.10.0+3991+5e651d4e
- ruby-irb Fixed in 2.5.9-114.module_el8.10.0+3991+5e651d4e
- ruby-libs Fixed in 2.5.9-114.module_el8.10.0+3991+5e651d4e
- rubygem-abrt Fixed in 0.3.0-4.module_el8.5.0+2625+ec418553
- rubygem-abrt-doc Fixed in 0.3.0-4.module_el8.10.0+3871+342e2c2f
- rubygem-bigdecimal Fixed in 1.3.4-114.module_el8.10.0+3991+5e651d4e
- rubygem-bson Fixed
A version is affected if any line below covers it.
- Affected before 4.3.0-2.module_el8.5.0+259+8cec6917
- Affected before 4.3.0-2.module_el8.5.0+2625+ec418553
- Affected before 4.3.0-2.module_el8.6.0+3170+4b08f9d4
- rubygem-bson-doc Fixed in 4.3.0-2.module_el8.5.0+2625+ec418553
- rubygem-bundler Fixed in 1.16.1-5.module_el8.10.0+3991+5e651d4e
- rubygem-bundler-doc Fixed in 1.16.1-5.module_el8.10.0+3991+5e651d4e
- rubygem-did_you_mean Fixed in 1.2.0-114.module_el8.10.0+3991+5e651d4e
- rubygem-io-console Fixed in 0.4.6-114.module_el8.10.0+3991+5e651d4e
- rubygem-json Fixed in 2.1.0-114.module_el8.10.0+3991+5e651d4e
- rubygem-minitest Fixed in 5.10.3-114.module_el8.10.0+3991+5e651d4e
- rubygem-mongo Fixed in 2.5.1-2.module_el8.5.0+2625+ec418553
- rubygem-mongo-doc Fixed in 2.5.1-2.module_el8.5.0+2625+ec418553
- rubygem-mysql2 Fixed
A version is affected if any line below covers it.
- Affected before 0.4.10-4.module_el8.5.0+259+8cec6917
- Affected before 0.4.10-4.module_el8.5.0+2625+ec418553
- Affected before 0.4.10-4.module_el8.6.0+3170+4b08f9d4
- rubygem-mysql2-doc Fixed in 0.4.10-4.module_el8.5.0+2625+ec418553
- rubygem-net-telnet Fixed in 0.1.1-114.module_el8.10.0+3991+5e651d4e
- rubygem-openssl Fixed in 2.1.2-114.module_el8.10.0+3991+5e651d4e
- rubygem-pg Fixed in 1.0.0-3.module_el8.9.0+3635+c6f99506
- rubygem-pg-doc Fixed in 1.0.0-3.module_el8.9.0+3635+c6f99506
- rubygem-power_assert Fixed in 1.1.1-114.module_el8.10.0+3991+5e651d4e
- rubygem-psych Fixed in 3.0.2-114.module_el8.10.0+3991+5e651d4e
- rubygem-rake Fixed in 12.3.3-114.module_el8.10.0+3991+5e651d4e
- rubygem-rdoc Fixed in 6.0.1.1-114.module_el8.10.0+3991+5e651d4e
- rubygem-test-unit Fixed in 3.2.7-114.module_el8.10.0+3991+5e651d4e
- rubygem-xmlrpc Fixed in 0.3.0-114.module_el8.10.0+3991+5e651d4e
- rubygems Fixed in 2.7.6.3-114.module_el8.10.0+3991+5e651d4e
- rubygems-devel Fixed in 2.7.6.3-114.module_el8.10.0+3991+5e651d4e
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- rubygems Fixed in 3.3.5-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- rubygems Fixed in 3.3.5-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- rubygems Fixed in 3.3.5-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- bundler No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- bundler No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- bundler No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.