6.5

CVE-2021-25214: debian debian_linux Reachable Assertion

CVSS: 6.5v3.1MediumModified
AliasesALPINE-CVE-2021-25214MGASA-2021-0275RHSA-2021:3325
Published 29-04-2021Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2021-25214 is a medium (CVSS 6.5) Reachable Assertion vulnerability in debian debian_linux. EPSS estimates a 6.23% chance of exploitation in the next 30 days, higher than 93.4% of scored vulnerabilities.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)
EPSS score
6.23%
0%100%
Low · +0.24 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 13 · Related 12
DLA-2647-1DSA-4909-1MGASA-2021-0220OPENSUSE-SU-2021:0668-1OPENSUSE-SU-2021:1826-1OPENSUSE-SU-2024:10650-1

Timeline

  1. 29-04-2021
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed.

CVSS metrics

9 scores · 8 sources · 2 versions

EPSS trend

Probability

6.23%

Chance of exploitation in the next 30 days

Percentile

93%

Versus all other CVEs

30-day change

+0.24 pp

From 5.99% on 18-09-2026

18-09-202618-10-2026
EPSS score
6.23%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat27 products
  • bind< 32:9.11.26-6.el8 | < 32:9.11.4-26.P2.el7_9.7
  • bind-chroot< 32:9.11.26-6.el8 | < 32:9.11.4-26.P2.el7_9.7
  • bind-debuginfo< 32:9.11.26-6.el8 | < 32:9.11.4-26.P2.el7_9.7
  • bind-debugsource< 32:9.11.26-6.el8
  • bind-devel< 32:9.11.26-6.el8 | < 32:9.11.4-26.P2.el7_9.7
Netapp11 products
Debian2 products
Isc2 products
  • bind≥ 9.8.5, ≤ 9.8.8 | ≥ 9.9.3, < 9.11.31 | ≥ 9.12.0, < 9.16.15 | ≥ 9.17.0, < 9.17.12 | 9.9.3:s1 | 9.9.12:s1 | 9.9.13:s1 | 9.10.5:s1 | 9.10.7:s1 | 9.11.3:s1 | 9.11.5:s3 | 9.11.5:s5 | 9.11.5:s6 | 9.11.6:s1 | 9.11.7:s1 | 9.11.8:s1 | 9.11.12:s1 | 9.11.21:s1 | 9.11.27:s1 | 9.11.29:s1 | 9.16.8:s1 | 9.16.11:s1 | 9.16.13:s1
  • bind9Open Source Branch 9.8 9.8.5 through 9.8.8 | Open Source Branches 9.9 through 9.11 9.9.3 through versions before 9.11.30 | Open Source Branches 9.12 through 9.16 9.12.0 through versions before 9.16.14 | Supported Preview Branches 9.9-S through 9.11-S 9.9.3-S1 through versions before 9.11.30-S1 | Supported Preview Branch 9.16-S 9.16.8-S1 through versions before 9.16.14-S1 | Development Branch 9.17 9.17.0 through versiosn before 9.17.12
Alpine1 product
  • bind≥ 9.8.5, < 9.16.15-r0
Chainguard1 product
  • bindAll versions (No fix recorded)
Fedoraproject1 product
Mageia1 product
  • bind< 9.11.6-1.5.mga7
Siemens1 product
Ubuntu1 product
  • bind9< 1:9.9.5.dfsg-3ubuntu0.19+esm13 | < 1:9.10.3.dfsg.P4-8ubuntu1.19 | < 1:9.11.3+dfsg-1ubuntu1.15 | < 1:9.16.1-0ubuntu2.8
Wolfi1 product
  • bindAll versions (No fix recorded)

11 vendors · 49 products

References

31 links
Show all 31 references