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CVE-2020-11061

Heap-based Buffer Overflow in Bareos Director

6.0 MediumFix available

In Bareos Director less than or equal to 16.2.10, 17.2.9, 18.2.8, and 19.2.7, a heap overflow allows a malicious client to corrupt the director's memory via oversized digest strings sent during initialization of a verify job. Disabling verify jobs mitigates the problem. This issue is also patched in Bareos versions 19.2.8, 18.2.9 and 17.2.10.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
High
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
Low
Integrity
Low
Availability
Low

Exploit likelihood

1.24%Up 0.4 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 6.0

Heap-based Buffer Overflow in Bareos Director

In Bareos Director less than or equal to 16.2.10, 17.2.9, 18.2.8, and 19.2.7, a heap overflow allows a malicious client to corrupt the director's memory via oversized digest strings sent during initialization of a verify job. Disabling verify jobs mitigates the problem. This issue is also patched in Bareos versions 19.2.8, 18.2.9 and 17.2.10.

Record
CVE-2020-11061
CVSS 3.1
6.0 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Weakness
CWE-122
Updated
2026-11-02
EUVDEUVD-2020-3438 6.0

In Bareos Director less than or equal to 16.2.10, 17.2.9, 18.2.8, and 19.2.7, a heap overflow allows a malicious client to corrupt the director's memory via oversized digest strings sent during initialization of a verify job. Disabling verify jobs mitigates the problem. This issue is also patched in Bareos versions 19.2.8, 18.2.9 and 17.2.10.

Record
EUVD-2020-3438
CVSS 3.1
6.0 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
Updated
2026-11-03
NVD 6.0

In Bareos Director less than or equal to 16.2.10, 17.2.9, 18.2.8, and 19.2.7, a heap overflow allows a malicious client to corrupt the director's memory via oversized digest strings sent during initialization of a verify job. Disabling verify jobs mitigates the problem. This issue is also patched in Bareos versions 19.2.8, 18.2.9 and 17.2.10.

Record
CVE-2020-11061
CVSS 3.1
6.0 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
CVSS 2.0
6.0 MediumAV:N/AC:M/Au:S/C:P/I:P/A:P
Weakness
CWE-122, CWE-787
Updated
2026-11-02
OSVALPINE-CVE-2020-11061 7.4

In Bareos Director less than or equal to 16.2.10, 17.2.9, 18.2.8, and 19.2.7, a heap overflow allows a malicious client to corrupt the director's memory via oversized digest strings sent during initialization of a verify job. Disabling verify jobs mitigates the problem. This issue is also patched in Bareos versions 19.2.8, 18.2.9 and 17.2.10.

Record
ALPINE-CVE-2020-11061
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Updated
2026-11-03
OSV 7.4

In Bareos Director less than or equal to 16.2.10, 17.2.9, 18.2.8, and 19.2.7, a heap overflow allows a malicious client to corrupt the director's memory via oversized digest strings sent during initialization of a verify job. Disabling verify jobs mitigates the problem. This issue is also patched in Bareos versions 19.2.8, 18.2.9 and 17.2.10.

Record
CVE-2020-11061
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Updated
2026-11-02
OSVDEBIAN-CVE-2020-11061 7.4

In Bareos Director less than or equal to 16.2.10, 17.2.9, 18.2.8, and 19.2.7, a heap overflow allows a malicious client to corrupt the director's memory via oversized digest strings sent during initialization of a verify job. Disabling verify jobs mitigates the problem. This issue is also patched in Bareos versions 19.2.8, 18.2.9 and 17.2.10.

Record
DEBIAN-CVE-2020-11061
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Updated
2026-11-02
OSVUBUNTU-CVE-2020-11061 6.0

In Bareos Director less than or equal to 16.2.10, 17.2.9, 18.2.8, and 19.2.7, a heap overflow allows a malicious client to corrupt the director's memory via oversized digest strings sent during initialization of a verify job. Disabling verify jobs mitigates the problem. This issue is also patched in Bareos versions 19.2.8, 18.2.9 and 17.2.10.

Record
UBUNTU-CVE-2020-11061
CVSS 3.1
6.0 MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
CVSS 3.1
7.4 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
bareos
Alpine:v3.12
17.2.4 up to 18.2.9-r0
18.2.9-r0
bareos
Alpine:v3.13
17.2.4 up to 19.2.8-r0
19.2.8-r0
bareos
Alpine:v3.14
17.2.4 up to 19.2.8-r0
19.2.8-r0
bareos
Alpine:v3.15
17.2.4 up to 19.2.8-r0
19.2.8-r0
bareos
Alpine:v3.16
17.2.4 up to 19.2.8-r0
19.2.8-r0
bareos
Alpine:v3.17
17.2.4 up to 19.2.8-r0
19.2.8-r0
bareos
Alpine:v3.18
17.2.4 up to 19.2.8-r0
19.2.8-r0
bareos
Alpine:v3.19
17.2.4 up to 19.2.8-r0
19.2.8-r0
bareos
Alpine:v3.20
17.2.4 up to 19.2.8-r0
19.2.8-r0
bareos
Alpine:v3.21
17.2.4 up to 19.2.8-r0
19.2.8-r0
Show 11 moreShow less
Affected packages
PackageAffectedFixed
bareos
Alpine:v3.22
17.2.4 up to 19.2.8-r0
19.2.8-r0
bareos
Alpine:v3.23
17.2.4 up to 19.2.8-r0
19.2.8-r0
bareos
Alpine:v3.24
17.2.4 up to 19.2.8-r0
19.2.8-r0
bacula
Debian:12
before 9.6.5-1
9.6.5-1
bacula
Debian:13
before 9.6.5-1
9.6.5-1
bacula
Debian:14
before 9.6.5-1
9.6.5-1
bacula
Debian:9
before 7.4.4+dfsg-6+deb9u2, plus listed versions
7.4.4+dfsg-67.4.4+dfsg-6+deb9u1
7.4.4+dfsg-6+deb9u2
bacula
Ubuntu:16.04:LTS
All versions, plus listed versions
5.2.6+dfsg-9.1ubuntu47.0.5+dfsg-47.0.5+dfsg-4build17.0.5+dfsg-4ubuntu0.1
None known
bareos
Ubuntu:16.04:LTS
All versions, plus listed versions
14.2.5-114.2.5-214.2.6-114.2.6-214.2.6-2build114.2.6-3
None known
bacula
Ubuntu:18.04:LTS
All versions, plus listed versions
7.4.4+dfsg-69.0.4+dfsg-39.0.5+dfsg-19.0.5+dfsg-39.0.5+dfsg-49.0.6-19.0.6-1build1
None known
bacula
Ubuntu:20.04:LTS
All versions, plus listed versions
9.4.2-2ubuntu39.4.2-2ubuntu49.4.2-2ubuntu5
None known

History

History
RecordedChangedSources
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-11061 is a medium vulnerability (CVSS 6.0) in Bareos, published July 10, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.24%, the 69th percentile. Fixed in bareos 18.2.9-r0.

References

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