CVE-2020-27678: illumos Classic Buffer Overflow
CVSS: 9.8v3.1CriticalModified
Published 23-10-2020Last modified 04-08-2024
Vulnerability summary
CVE-2020-27678 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in illumos. EPSS estimates a 1.44% chance of exploitation in the next 30 days, higher than 72.8% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
1.44%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 23-10-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
An issue was discovered in illumos before 2020-10-22, as used in OmniOS before r151030by, r151032ay, and r151034y and SmartOS before 20201022. There is a buffer overflow in parse_user_name in lib/libpam/pam_framework.c.
CVSS metrics
2 scores · 1 source · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesSingle source
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.44%
Chance of exploitation in the next 30 days
Percentile
73%
Versus all other CVEs
30-day change
0.00 pp
From 1.44% on 20-09-2026
20-09-202620-10-2026
EPSS score1.44%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Illumos1 product
- illumos< 2020-10-22
Joyent1 product
- smartos< 20201022
Omniosce1 product
- omnios< r151030by | ≥ r151032, ≤ r151032ay | ≥ r151034, < r151034y
3 vendors · 3 products
References
1 links- github.com/illumos/illumos-gate/commit/1d276e0b382cf066dae93640746d8b4c54d15452X Refsource MISCPatchThird Party Advisory