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No exploitation reportedFix available

CVE-2019-25017

No exploitation reported by the sources we read.

  • Published2021-02-02
  • WeaknessCWE-863

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An issue was discovered in rcp in MIT krb5-appl through 1.0.3. Due to the rcp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the rcp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious rcp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the rcp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file). This issue is similar to CVE-2019-6111 and CVE-2019-7283. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8.

Timeline

dates in UTC
  1. 2021-02-0218:15CVE publishedNVD

Versions per branch

NVD
Mit krb5-appl
BranchAffectedFixed in
1.0≤ 1.0.3no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • krb5-applSUSE:OpenStack Cloud Crowbar 9all versions · fixed in 1.0.3-3.6.1
  • krb5-applSUSE:OpenStack Cloud Crowbar 8all versions · fixed in 1.0.3-3.6.1
  • krb5-applSUSE:OpenStack Cloud 9all versions · fixed in 1.0.3-3.6.1
  • krb5-applSUSE:OpenStack Cloud 8all versions · fixed in 1.0.3-3.6.1
  • krb5-applSUSE:OpenStack Cloud 7all versions · fixed in 1.0.3-3.6.1
  • krb5-applSUSE:Linux Enterprise Server for SAP Applications 12 SP5all versions · fixed in 1.0.3-3.6.1
  • krb5-applSUSE:Linux Enterprise Server for SAP Applications 12 SP4all versions · fixed in 1.0.3-3.6.1
  • krb5-applSUSE:Linux Enterprise Server for SAP Applications 12 SP3all versions · fixed in 1.0.3-3.6.1

10 more package ranges on OSV.dev

Vendor advisories

  • CVE-2019-25017 Red Hat Product Security3 known affected

    krb5-appl: Improper validation of object names allows malicious server to overwrite files via rcp client

    krb5-appl-clients as a component of Red Hat Enterprise Linux 6 · krb5-appl-servers as a component of Red Hat Enterprise Linux 6 · krb5-appl.src as a component of Red Hat Enterprise Linux 6

Full record on NVD

Fix

  1. No fix planned, says the vendor Red Hat Product Security CVE-2019-25017 · 3 productsOut of support scope

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
2021-02-02
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-hj6m-8794-335m

Frequently asked questions

What is CVE-2019-25017?

An issue was discovered in rcp in MIT krb5-appl through 1.0.3. Due to the rcp implementation being derived from 1983 rcp, the server chooses which files/directories are sent to the client. However, the rcp client only performs cursory validation of the object name returned (only directory traversal attacks are prevented). A malicious rcp server (or Man-in-The-Middle attacker) can overwrite arbitrary files in the rcp client target directory. If recursive operation (-r) is performed, the server can manipulate subdirectories as well (for example, to overwrite the .ssh/authorized_keys file). This issue is similar to CVE-2019-6111 and CVE-2019-7283. NOTE: MIT krb5-appl is not supported upstream but is shipped by a few Linux distributions. The affected code was removed from the supported MIT Kerberos 5 (aka krb5) product many years ago, at version 1.8.

Is CVE-2019-25017 actively exploited?

Active exploitation of CVE-2019-25017 has not been confirmed. Its EPSS score was 1.4% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-25017?

CVE-2019-25017 has a CVSS v3 base score of 5.9 (MEDIUM severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

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