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Fencer Vulns
medium 5.0

CVE-2008-1678 json

Memory leak in the zlib_stateful_init function in crypto/comp/c_zlib.c in libssl in OpenSSL 0.9.8f through 0.9.8h allows remote attackers t…

published 2008-07-10 18 y ago modified 2026-06-16 4 mo ago also EUVD-2008-1679

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.5%
EPSS 5.5% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

Memory leak in the zlib_stateful_init function in crypto/comp/c_zlib.c in libssl in OpenSSL 0.9.8f through 0.9.8h allows remote attackers to cause a denial of service (memory consumption) via multiple calls, as demonstrated by initial SSL client handshakes to the Apache HTTP Server mod_ssl that specify a compression algorithm.

Patch / fix

  • apache2 Debian 14, Debian 13, Debian 12 2.2.8-4

debian advisories DEBIAN-CVE-2008-1678

  • httpd RHEL 5 2.2.3-22.el5_3.1
  • mod_ssl RHEL 5 1:2.2.3-22.el5_3.1
  • httpd-manual RHEL 5 2.2.3-22.el5_3.1

red hat advisories RHSA-2009:1075

  • apache2 openSUSE Tumbleweed 2.4.49-1.1

opensuse advisories openSUSE-SU-2024:10623-1

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-2008-1678 updated cvss 5.0

httpd: mod_ssl per-connection memory leak for connections with zlib compression

  • Red Hat Enterprise Linux (v. 5 server) httpd 2.2.3-22.el5_3.1, mod_ssl 2.2.3-22.el5_3.1, httpd-manual 2.2.3-22.el5_3.1 Red Hat Enterprise Linux Desktop (v. 5 client) httpd 2.2.3-22.el5_3.1, mod_ssl 2.2.3-22.el5_3.1, httpd-manual 2.2.3-22.el5_3.1 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) httpd 2.2.3-22.el5_3.1, mod_ssl 2.2.3-22.el5_3.1, httpd-manual 2.2.3-22.el5_3.1
    fixed: vendor fix RHSA-2009:1075

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

5.48% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.edge.launchpad.net https://bugs.edge.launchpad.net/bugs/224945 referenced PoC, tagged "exploit" by a source, unverified
  • marc.info http://marc.info/?l=openssl-dev&m=121060672602371&w=2 referenced PoC, tagged "exploit" by a source, unverified

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-399 Resource Management Errors
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.