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NVD / CVE Program· CNA GitHub_M

CVE-2020-11061: Heap-based Buffer Overflow in Bareos Director

HighCVSS 7.4 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 29/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.2% (FIRST EPSS); higher than 69.5% of all records.
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: bareos (Alpine:v3.12) 18.2.9-r0; bareos (Alpine:v3.13) 19.2.8-r0; bacula (Debian:12) 9.6.5-1.

Low priority for now. Upgrade to bareos (Alpine:v3.12) 18.2.9-r0; bareos (Alpine:v3.13) 19.2.8-r0; bacula (Debian:12) 9.6.5-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

Published
Jul 10, 2020
Updated
Jun 16, 2026
EPSS
1.2% · 69th percentile

Report tools

JSON

Action score

29

Monitor

Low priority for now.

CVSS
29 / 40 · 7.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.2%

CNA vs NVD score

NVD
7.4
CNA · GitHub_M
6.0
1.4 point gap

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2020-11061

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
bareosbareos
debiandebian linux

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • Bareos GmbH & Co. KG Bareos Director

    • <= 16.2.10, <= 17.2.9, <= 18.2.8, <= 19.2.7affected
Affected versions · NVD (6)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • bareos bareosup to 16.2.10 inclusive
  • bareos bareos17.2.4 and later · up to 17.2.9 inclusive
  • bareos bareos18.2.5 and later · up to 18.2.8 inclusive
  • bareos bareos18.4.1 and later · up to 19.2.7 inclusive
  • bareos bareos18.2.4
  • debian debian linux9.0

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Alpine:v3.12bareosfrom 17.2.4 · before 18.2.9-r018.2.9-r0
Alpine:v3.13bareosfrom 17.2.4 · before 19.2.8-r019.2.8-r0
Debian:12baculabefore 9.6.5-19.6.5-1
Debian:9baculabefore 7.4.4+dfsg-6+deb9u27.4.4+dfsg-6+deb9u2

Same product

bareos: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-24755Incorrect Authorization in Bareos Director
    40Plan
  • CVE-2024-45044Bareos's negative command ACLs can be circumvented by abbreviating commands
    35Monitor
  • CVE-2022-24756Missing Release of Memory after Effective Lifetime in Bareos Director
    31Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2017-14610Sep 20, 2017 · bareos-dir, bareos-fd, and bareos-sd in bareos-core in Bareos 16.2.6 and earlier create a PID file after dropping privileges to a non-root…
    31Monitor
  • Later →CVE-2020-4042Jul 10, 2020 · Authentication bypass in Bareos
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
alpine:bareos18.2.9-r0 · Alpine:v3.12Package registry (OSV)
debian:bacula9.6.5-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
low · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
Low

Weakness class (CWE)

CWE-122 · Heap-based Buffer Overflow

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records