CVE-2019-11503: canonical snapd Link Following
CVSS: 7.5v3.0HighModified
AliasesUBUNTU-CVE-2019-11503DEBIAN-CVE-2019-11503
Published 24-04-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-11503 is a high (CVSS 7.5) Link Following vulnerability in canonical snapd. EPSS estimates a 2.42% chance of exploitation in the next 30 days, higher than 83.8% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
7.5/10
010
High · v3.0 (NVD)EPSS score
2.42%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Timeline
- 24-04-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
snap-confine as included in snapd before 2.39 did not guard against symlink races when performing the chdir() to the current working directory of the calling user, aka a "cwd restore permission bypass."
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 · DebianEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Medium 5.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
2.42%
Chance of exploitation in the next 30 days
Percentile
84%
Versus all other CVEs
30-day change
0.00 pp
From 2.42% on 18-09-2026
18-09-202618-10-2026
EPSS score2.42%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (openwall.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Canonical1 product
- snapd< 2.39
Debian1 product
- snapd< 2.40-1
Ubuntu1 product
- snapd< 2.39.2ubuntu0.2 | < 2.39.2+18.04
3 vendors · 3 products
References
8 links- www.openwall.com/lists/oss-security/2019/04/18/4X Refsource MISCExploitMailing ListPatchThird Party AdvisoryREPORT
