Auth bypass in Ballerina
CVE-2021-32700
Ballerina is an open source programming language and platform for cloud application programmers. Ballerina versions 1.2.x and SL releases up to alpha 3 have a potential for a supply chain attack via MiTM against users. Http connections did not make use of TLS and certificate checking was ignored. The vulnerability allows an attacker to substitute or modify packages retrieved from BC thus allowing to inject malicious code into ballerina executables. This has been patched in Ballerina 1.2.14 and Ballerina SwanLake alpha4.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.006 (45.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Ballerina
- Ballerina Swan Lake — versions alpha1, alpha2, alpha3
- Ballerina-Platform Ballerina-Lang — versions < 1.2.14, < SL-alpha4
Weakness classification (CWE)
References
- github.com/ballerina-platform/ballerina-lang/security/advisories/GHSA-f5qg-fqrw… (Third Party Advisory)
- github.com/ballerina-platform/ballerina-lang/commit/4609ffee1744ecd16aac09303b1… (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-32700?
- CVE-2021-32700 is a critical-severity vulnerability in Ballerina, classified under Missing Authentication for Critical Function. CVSS score: 9.1/10. Published 2021-06-22.
- How severe is CVE-2021-32700?
- Critical severity. CVSS v3 base score is 9.1 out of 10.