CVE-2021-30139
In Alpine Linux apk-tools before 2.12.5, the tarball parser allows a buffer overflow and crash.
In Alpine Linux apk-tools before 2.12.5, the tarball parser allows a buffer overflow and crash.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
In Alpine Linux apk-tools before 2.12.5, the tarball parser allows a buffer overflow and crash.
- Record
CVE-2021-30139- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-125
- Updated
- 2026-11-02
CVE List No score
In Alpine Linux apk-tools before 2.12.5, the tarball parser allows a buffer overflow and crash.
- Record
CVE-2021-30139- Updated
- 2026-11-02
EUVDEUVD-2021-17076 No score
In Alpine Linux apk-tools before 2.12.5, the tarball parser allows a buffer overflow and crash.
- Record
EUVD-2021-17076- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-j8vp-8v7m-rpjr No score
In Alpine Linux apk-tools before 2.12.5, the tarball parser allows a buffer overflow and crash.
In Alpine Linux apk-tools before 2.12.5, the tarball parser allows a buffer overflow and crash.
- Record
GHSA-j8vp-8v7m-rpjr- Weakness
- CWE-125
- Updated
- 2026-11-02
OSVALPINE-CVE-2021-30139
In Alpine Linux apk-tools before 2.12.5, the tarball parser allows a buffer overflow and crash.
- Record
ALPINE-CVE-2021-30139- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVBELL-CVE-2021-30139
CVE-2021-30139 does not affect BellSoft software
- Record
BELL-CVE-2021-30139- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSV
In Alpine Linux apk-tools before 2.12.5, the tarball parser allows a buffer overflow and crash.
- Record
CVE-2021-30139- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
apk-toolsAlpine:v3.10 |
2.12.0 up to 2.10.6-r0 | 2.10.6-r0 |
apk-toolsAlpine:v3.11 |
2.12.0 up to 2.10.6-r0 | 2.10.6-r0 |
apk-toolsAlpine:v3.12 |
2.12.0 up to 2.10.6-r0 | 2.10.6-r0 |
apk-toolsAlpine:v3.13 |
2.12.0 up to 2.12.5-r0 | 2.12.5-r0 |
apk-toolsAlpine:v3.14 |
2.12.0 up to 2.12.5-r0 | 2.12.5-r0 |
apk-toolsAlpine:v3.15 |
2.12.0 up to 2.12.5-r0 | 2.12.5-r0 |
apk-toolsAlpine:v3.16 |
2.12.0 up to 2.12.5-r0 | 2.12.5-r0 |
apk-toolsAlpine:v3.17 |
2.12.0 up to 2.12.5-r0 | 2.12.5-r0 |
apk-toolsAlpine:v3.18 |
2.12.0 up to 2.12.5-r0 | 2.12.5-r0 |
apk-toolsAlpine:v3.19 |
2.12.0 up to 2.12.5-r0 | 2.12.5-r0 |
Show 5 moreShow less
| Package | Affected | Fixed |
|---|---|---|
apk-toolsAlpine:v3.20 |
2.12.0 up to 2.12.5-r0 | 2.12.5-r0 |
apk-toolsAlpine:v3.21 |
2.12.0 up to 2.12.5-r0 | 2.12.5-r0 |
apk-toolsAlpine:v3.22 |
2.12.0 up to 2.12.5-r0 | 2.12.5-r0 |
apk-toolsAlpine:v3.23 |
2.12.0 up to 2.12.5-r0 | 2.12.5-r0 |
apk-toolsAlpine:v3.24 |
2.12.0 up to 2.12.5-r0 | 2.12.5-r0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-30139 is a high vulnerability (CVSS 7.5) in Alpinelinux Apk-tools, published April 21, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.62%, the 76th percentile. Fixed in apk-tools 2.10.6-r0.