CVE-2020-8244
Last modified
CVE-2020-8244 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 2.12% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Bufferlist Project | Bufferlist | < 1.2.3 |
| Bufferlist Project | Bufferlist | >= 2.0.0, < 2.2.1 |
| Bufferlist Project | Bufferlist | >= 3.0.0, < 3.0.1 |
| Bufferlist Project | Bufferlist | >= 4.0.0, < 4.0.3 |
| Debian | Debian Linux | 9.0 |
References
- https://hackerone.com/reports/966347Exploit, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00028.htmlMailing List, Third Party Advisory
- https://hackerone.com/reports/966347Exploit, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/06/msg00028.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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