8.8

CVE-2020-9308: canonical ubuntu_linux Out-of-bounds Write

CVSS: 8.8v3.1HighModified
AliasesALPINE-CVE-2020-9308DEBIAN-CVE-2020-9308
Published 20-02-2020Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2020-9308 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in canonical ubuntu_linux. EPSS estimates a 2.25% chance of exploitation in the next 30 days, higher than 82.6% of scored vulnerabilities.

Overall risk
36/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (NVD)
EPSS score
2.25%
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 1
MGASA-2020-0127

Timeline

  1. 20-02-2020
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

Description

archive_read_support_format_rar5.c in libarchive before 3.4.2 attempts to unpack a RAR5 file with an invalid or corrupted header (such as a header size of zero), leading to a SIGSEGV or possibly unspecified other impact.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

2.25%

Chance of exploitation in the next 30 days

Percentile

83%

Versus all other CVEs

30-day change

0.00 pp

From 2.25% on 19-09-2026

19-09-202619-10-2026
EPSS score
2.25%

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

Alpine1 product
  • libarchive≥ 3.4.0, < 3.4.2-r0
Canonical1 product
Debian1 product
  • libarchive< 3.4.0-2
Fedoraproject1 product
Libarchive1 product

5 vendors · 5 products

References

9 links