Vulnerability · Published Aug 30, 2020 · Assigned by hackerone
CVE-2020-8244
Medium 6.5
In plain English
A medium-severity security flaw in bl. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)6.5Medium
Exploit odds (30 days)2.1%top 18.2% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A buffer over-read vulnerability exists in bl <4.0.3, <3.0.1, <2.2.1, and <1.2.3 which could allow an attacker to supply user input (even typed) that if it ends up in consume() argument and can become negative, the BufferList state can be corrupted, tricking it into exposing uninitialized memory via regular .slice() calls.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | node-bl | 4.0.3-1 | DEBIAN-CVE-2020-8244 |
| Debian:13 | node-bl | 4.0.3-1 | DEBIAN-CVE-2020-8244 |
| Debian:14 | node-bl | 4.0.3-1 | DEBIAN-CVE-2020-8244 |
| npm | bl | 1.2.3 | GHSA-pp7h-53gx-mx7r |
| npm | bl | 4.0.3 | GHSA-pp7h-53gx-mx7r |
| npm | bl | 2.2.1 | GHSA-pp7h-53gx-mx7r |
| npm | bl | 3.0.1 | GHSA-pp7h-53gx-mx7r |
Affected products (as reported)
Weakness: CWE-126
References
- https://hackerone.com/reports/966347 x_refsource_MISC
- [debian-lts-announce] 20210630 [SECURITY] [DLA 2698-1] node-bl security update mailing-list, x_refsource_MLIST