CVE-2018-20990: tar_project tar Link Following
CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2018-20990GHSA-2367-c296-3mp2RUSTSEC-2018-0002
Published 26-08-2019Last modified 05-08-2024
Vulnerability summary
CVE-2018-20990 is a high (CVSS 7.5) Link Following vulnerability in tar_project tar. EPSS estimates a 1.68% chance of exploitation in the next 30 days, higher than 76.5% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.0 (NVD)EPSS score
1.68%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 26-08-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in the tar crate before 0.4.16 for Rust. Arbitrary file overwrite can occur via a symlink or hardlink in a TAR archive.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- OSV · Crates.ioEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Medium 6.4Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.68%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
0.00 pp
From 1.68% on 19-09-2026
19-09-202619-10-2026
EPSS score1.68%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Crates.Io1 product
- tar< 0.4.16 | ≥ 0.0.0-0, < 0.4.16
Tar_project1 product
- tar< 0.4.16
Ubuntu1 product
- rust-tarAll versions (No fix recorded)
3 vendors · 3 products
References
8 links
- crates.io/crates/tarPACKAGE