CVE-2018-20763: canonical ubuntu_linux Out-of-bounds Write
CVSS: 7.8v3.0HighModified
AliasesUBUNTU-CVE-2018-20763DEBIAN-CVE-2018-20763
Published 06-02-2019Last modified 05-08-2024
Vulnerability summary
CVE-2018-20763 is a high (CVSS 7.8) Out-of-bounds Write vulnerability in canonical ubuntu_linux. EPSS estimates a 1.41% chance of exploitation in the next 30 days, higher than 72.2% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.8/10
010
High · v3.0 (NVD)EPSS score
1.41%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Advisory lineage
Upstream 0 · Downstream 3 · Related 1Timeline
- 06-02-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
In GPAC 0.7.1 and earlier, gf_text_get_utf8_line in media_tools/text_import.c in libgpac_static.a allows an out-of-bounds write because of missing szLineConv bounds checking.
CVSS metrics
4 scores · 3 sources · 2 versionsHigh 7.8Preferred score · NVD (NIST)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated7.8HighCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Medium 6.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.41%
Chance of exploitation in the next 30 days
Percentile
72%
Versus all other CVEs
30-day change
0.00 pp
From 1.41% on 18-09-2026
18-09-202618-10-2026
EPSS score1.41%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundGpac
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Debian2 products
- gpac< 0.5.2-426-gc5ad4e4+dfsg5-4.1
- debian_linuxEOL8.0
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 18.10
Gpac_project1 product
- gpac≤ 0.7.1
Ubuntu1 product
- gpac< 0.5.0+svn4288~dfsg1-4ubuntu1+esm1 | < 0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1 | < 0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1
4 vendors · 5 products
References
8 links
lists.debian.org/debian-lts-announce/2019/02/msg00040.htmlMailing ListX Refsource MLISTThird Party Advisory- github.com/gpac/gpac/commit/1c449a34fe0b50aaffb881bfb9d7c5ab0bb18cddX Refsource MISCPatchThird Party AdvisoryREPORT