CVE-2013-2213

Cryptographic prediction via weak linear congruential RNG

Published Feb 11, 2020 · Updated Aug 6, 2024

Weak cryptography in KDE Paste Applet after 4.10.5 allows context-dependent attackers to defeat cryptographic protections via predictable output. The KRandom::random function relies on the GNU C Library rand linear congruential generator, making generated password values predictable instead of cryptographically random. Attackers who obtain generated passwords or related hashes can predict outputs and compromise authentication secrets; no remote service exposure is required.

CVSS severity2.1
Low
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Weak cryptography in KDE Paste Applet after 4.10.5 allows context-dependent attackers to defeat cryptographic protections via predictable output. The KRandom::random function relies on the GNU C Library rand linear congruential generator, making generated password values predictable instead of cryptographically random. Attackers who obtain generated passwords or related hashes can predict outputs and compromise authentication secrets; no remote service exposure is required.

The record

CVE
CVE-2013-2213
Published
Feb 11, 2020
Updated
Aug 6, 2024
Vendor
KDE
Product
KDE Paste Applet
Classifications
CWE-327
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 11, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=after 4.10.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

KDE · KDE Paste Appletversion=after 4.10.5

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
2.1NVDAV:L/AC:L/Au:N/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-327Use of a Broken or Risky Cryptographic Algorithm

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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