CVE-2020-8244
CVE-2020-8244 is a medium-severity vulnerability in Bufferlist Project Bufferlist with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- CVSS v2: 6.4
- EPSS exploit prediction: 2% (80th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Bufferlist Project Bufferlist
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2020-8244?
- 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.
- How severe is CVE-2020-8244?
- CVE-2020-8244 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability low.
- Is CVE-2020-8244 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-8244?
- CVE-2020-8244 primarily affects Bufferlist Project Bufferlist. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-8244?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-8244 published?
- CVE-2020-8244 was published on 2020-08-30 and last updated on 2026-06-17.
References
- https://hackerone.com/reports/966347
- https://lists.debian.org/debian-lts-announce/2021/06/msg00028.html
Affected products (2)
- cpe:2.3:a:bufferlist_project:bufferlist:*:*:*:*:*:node.js:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
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