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CVE-2021-37136The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the…
- 7.5HighCVSS base score
- 5.9%Exploitation in 30 daysEPSS · top 6.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocation size used during decompression). All users of Bzip2Decoder are affected. The malicious input can trigger an OOME and so a DoS attack
Timeline
ID reserved
By JFROG
- 3 months later
· 3 months later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 5.9% · top 6.7% of all CVEs (12 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected unspecified – < 4.1.68Final
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenio.netty:nettyGHSA-grg4-wf29-r9vv (opens in a new tab)
- Mavenio.netty:netty-codecGHSA-grg4-wf29-r9vv (opens in a new tab)
- Mavenorg.jboss.netty:nettyGHSA-grg4-wf29-r9vv (opens in a new tab)
References
References13
- https://github.com/netty/netty/security/advisories/GHSA-grg4-wf29-r9vv (opens in a new tab)x_transferred
- [tinkerpop-dev] 20211025 [jira] [Created] (TINKERPOP-2632) Netty 4.1.61 flagged with two high severity security violations (opens in a new tab)mailing-listx_transferred
- [druid-commits] 20211025 [GitHub] [druid] jihoonson opened a new pull request #11844: Bump netty4 to 4.1.68; suppress CVE-2021-37136 and CVE-2021-37137 for netty3 (opens in a new tab)mailing-listx_transferred
- [druid-commits] 20211025 [GitHub] [druid] jihoonson commented on pull request #11844: Bump netty4 to 4.1.68; suppress CVE-2021-37136 and CVE-2021-37137 for netty3 (opens in a new tab)mailing-listx_transferred
- [druid-commits] 20211025 [GitHub] [druid] a2l007 commented on pull request #11844: Bump netty4 to 4.1.68; suppress CVE-2021-37136 and CVE-2021-37137 for netty3 (opens in a new tab)mailing-listx_transferred
- [druid-commits] 20211026 [GitHub] [druid] clintropolis merged pull request #11844: Bump netty4 to 4.1.68; suppress CVE-2021-37136 and CVE-2021-37137 for netty3 (opens in a new tab)mailing-listx_transferred
- [druid-commits] 20211026 [GitHub] [druid] jihoonson commented on pull request #11844: Bump netty4 to 4.1.68; suppress CVE-2021-37136 and CVE-2021-37137 for netty3 (opens in a new tab)mailing-listx_transferred
- https://www.oracle.com/security-alerts/cpujan2022.html (opens in a new tab)x_transferred
- https://www.oracle.com/security-alerts/cpuapr2022.html (opens in a new tab)x_transferred
- https://security.netapp.com/advisory/ntap-20220210-0012/ (opens in a new tab)x_transferred
- https://www.oracle.com/security-alerts/cpujul2022.html (opens in a new tab)x_transferred
- [debian-lts-announce] 20230111 [SECURITY] [DLA 3268-1] netty security update (opens in a new tab)mailing-listx_transferred
- DSA-5316 (opens in a new tab)vendor-advisoryx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2021-2064 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-grg4-wf29-r9vv (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-37136)Record last updated .