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CVE-2012-4502

MEDIUM · CVSS 5.0EPSS 3.2%EU EUVD

Multiple integer overflows in pktlength.c in Chrony before 1.29 allow remote attackers to cause a denial of service (crash) via a crafted (1) REQ_SUBNETS_ACCESSED or (2) REQ_CLIENT_ACCESSES command request to the PKL_CommandLength function or crafted (3) RPY_SUBNETS_ACCESSED, (4) RPY_CLIENT_ACCESSES, (5) RPY_CLIENT_ACCESSES_BY_INDEX, or (6) RPY_MANUAL_LIST command reply to the PKL_ReplyLength function, which triggers an out-of-bounds read or buffer overflow. NOTE: versions 1.27 and 1.28 do not require authentication to exploit.

Key facts

CVSS score
5.0 (v2.0)
Severity
MEDIUM
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness (CWE)
CWE-189
EPSS score
3.2% (88th percentile)
In CISA KEV
No
In EU EUVD
Yes (EUVD-2012-4431)
Published
November 5, 2013
NVD last modified
June 16, 2026
Status
Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2012-4431 in the EU Vulnerability Database. Last updated in EUVD on September 17, 2024.

View on the EU Vulnerability Database

Affected products

  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony
  • tuxfamily / chrony

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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