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Fencer Vulns
medium 5.0

CVE-2009-1377 json

The dtls1_buffer_record function in ssl/d1_pkt.c in OpenSSL 0.9.8k and earlier 0.9.8 versions allows remote attackers to cause a denial of…

published 2009-05-19 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1375

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
11.3%
EPSS 11.3% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

The dtls1_buffer_record function in ssl/d1_pkt.c in OpenSSL 0.9.8k and earlier 0.9.8 versions allows remote attackers to cause a denial of service (memory consumption) via a large series of "future epoch" DTLS records that are buffered in a queue, aka "DTLS record buffer limitation bug."

Patch / fix

  • openssl openssl 0.9.8m
  • openssl Debian 14, Debian 13, Debian 12 0.9.8k-1

debian advisories DEBIAN-CVE-2009-1377

  • openssl RHEL 5 0.9.8e-12.el5
  • openssl-perl RHEL 5 0.9.8e-12.el5

red hat advisories RHSA-2009:1335

  • openssl-1_1 openSUSE Tumbleweed 1.1.1l-1.2

opensuse advisories openSUSE-SU-2024:11127-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-1377 updated cvss 5.0

OpenSSL: DTLS epoch record buffer memory DoS

  • Red Hat Enterprise Linux (v. 5 server) openssl 0.9.8e-12.el5, openssl-perl 0.9.8e-12.el5 Red Hat Enterprise Linux Desktop (v. 5 client) openssl 0.9.8e-12.el5, openssl-perl 0.9.8e-12.el5 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) openssl 0.9.8e-12.el5, openssl-perl 0.9.8e-12.el5
    fixed: vendor fix RHSA-2009:1335

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

11.27% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness
  • CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.