CVE-2019-20433: gnu aspell Out-of-bounds Read
CVSS: 9.1v3.1CriticalModified
AliasesSUSE-SU-2020:2807-1UBUNTU-CVE-2019-20433DEBIAN-CVE-2019-20433
Published 27-01-2020Last modified 05-08-2024
Vulnerability summary
CVE-2019-20433 is a critical (CVSS 9.1) Out-of-bounds Read vulnerability in gnu aspell. EPSS estimates a 1.74% chance of exploitation in the next 30 days, higher than 77.3% of scored vulnerabilities.
CVSS score
9.1/10
010
Critical · v3.1 (NVD)EPSS score
1.74%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 27-01-2020PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
libaspell.a in GNU Aspell before 0.60.8 has a buffer over-read for a string ending with a single '\0' byte, if the encoding is set to ucs-2 or ucs-4 outside of the application, as demonstrated by the ASPELL_CONF environment variable.
CVSS metrics
4 scores · 3 sources · 2 versionsCritical 9.1Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated9.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
- OSV · DebianEcosystem advisory · calculated9.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Medium 6.4Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.74%
Chance of exploitation in the next 30 days
Percentile
77%
Versus all other CVEs
30-day change
0.00 pp
From 1.74% on 19-09-2026
19-09-202619-10-2026
EPSS score1.74%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Suse3 products
- aspell&distro=SUSE Linux Enterprise Server 12 SP5< 0.60.6.1-18.8.2
- aspell&distro=SUSE Linux Enterprise Server for SAP Applications 12 SP5< 0.60.6.1-18.8.2
- aspell&distro=SUSE Linux Enterprise Software Development Kit 12 SP5< 0.60.6.1-18.8.2
Debian1 product
- aspell< 0.60.7-3
Gnu1 product
- aspell< 0.60.8
Ubuntu1 product
- aspellAll versions (No fix recorded)
4 vendors · 6 products
