7.8

CVE-2021-3578: debian debian_linux Incorrect Type Conversion or Cast

CVSS: 7.8v3.1HighModified
AliasesopenSUSE-SU-2021:1185-1UBUNTU-CVE-2021-3578DEBIAN-CVE-2021-3578
Published 16-02-2022Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-3578 is a high (CVSS 7.8) Incorrect Type Conversion or Cast vulnerability in debian debian_linux. EPSS estimates a 1.04% chance of exploitation in the next 30 days, higher than 63.3% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
1.04%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 2 · Related 1
DLA-3066-1OPENSUSE-SU-2024:10866-1

Timeline

  1. 16-02-2022
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in mbsync before v1.3.6 and v1.4.2, where an unchecked pointer cast allows a malicious or compromised server to write an arbitrary integer value past the end of a heap-allocated structure by issuing an unexpected APPENDUID response. This could be plausibly exploited for remote code execution on the client.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.04%

Chance of exploitation in the next 30 days

Percentile

63%

Versus all other CVEs

30-day change

0.00 pp

From 1.04% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.04%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Fedoraproject1 product
Isync_project1 product
  • isync< 1.3.6 | 1.4.0 | 1.4.1
Opensuse1 product
  • isync&distro=openSUSE Leap 15.2< 1.3.6-lp152.4.6.1
Suse1 product
  • isync&distro=SUSE Package Hub 15 SP2< 1.3.6-bp152.4.6.1
Ubuntu1 product
  • isyncAll versions (No fix recorded)

6 vendors · 7 products

References

16 links
Show all 16 references