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Fencer Vulns
low 1.2

CVE-2007-3108 json

The BN_from_montgomery function in crypto/bn/bn_mont.c in OpenSSL 0.9.8e and earlier does not properly perform Montgomery multiplication, w…

published 2007-08-08 19 y ago modified 2026-06-16 4 mo ago also EUVD-2007-3100

cvss
1.2
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 34%
public exploits
0
none known

Summary

The BN_from_montgomery function in crypto/bn/bn_mont.c in OpenSSL 0.9.8e and earlier does not properly perform Montgomery multiplication, which might allow local users to conduct a side-channel attack and retrieve RSA private keys.

Patch / fix

  • openssl Debian 14, Debian 13, Debian 12 0.9.8e-6

debian advisories DEBIAN-CVE-2007-3108

  • openssl RHEL 5 0.9.8b-8.3.el5_0.2
  • openssl-perl RHEL 5 0.9.8b-8.3.el5_0.2
  • openssl RHEL 4 0.9.7a-43.17.el4_6.1
  • openssl-perl RHEL 4 0.9.7a-43.17.el4_6.1
  • openssl RHEL 2.1 0.9.6b-48
  • openssl RHEL 3 0.9.7a-33.24
  • openssl-perl RHEL 2.1 0.9.6b-48
  • openssl-perl RHEL 3 0.9.7a-33.24

red hat advisories RHSA-2007:0964RHSA-2007:1003RHSA-2007:0813

  • openssl-1_0_0 openSUSE Tumbleweed 1.0.2u-6.2
  • openssl-1_1 openSUSE Tumbleweed 1.1.1l-1.2

opensuse advisories openSUSE-SU-2024:11126-1openSUSE-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-2007-3108 updated

openssl: RSA side-channel attack

  • Red Hat Desktop version 3 openssl 0.9.7a-33.24, openssl-perl 0.9.7a-33.24
    fixed: vendor fix RHSA-2007:0813
  • Red Hat Enterprise Linux (v. 5 server) openssl 0.9.8b-8.3.el5_0.2, openssl-perl 0.9.8b-8.3.el5_0.2
    fixed: vendor fix RHSA-2007:0964
  • Red Hat Enterprise Linux AS (Advanced Server) version 2.1 openssl 0.9.6b-48, openssl-perl 0.9.6b-48 Red Hat Enterprise Linux AS version 3 openssl 0.9.7a-33.24, openssl-perl 0.9.7a-33.24
    fixed: vendor fix RHSA-2007:0813
  • Red Hat Enterprise Linux AS version 4 openssl 0.9.7a-43.17.el4_6.1, openssl-perl 0.9.7a-43.17.el4_6.1
    fixed: vendor fix RHSA-2007:1003
  • Red Hat Enterprise Linux Desktop (v. 5 client) openssl 0.9.8b-8.3.el5_0.2, openssl-perl 0.9.8b-8.3.el5_0.2
    fixed: vendor fix RHSA-2007:0964
  • Red Hat Enterprise Linux Desktop version 4 openssl 0.9.7a-43.17.el4_6.1, openssl-perl 0.9.7a-43.17.el4_6.1
    fixed: vendor fix RHSA-2007:1003
  • Red Hat Enterprise Linux Desktop Workstation (v. 5 client) openssl 0.9.8b-8.3.el5_0.2, openssl-perl 0.9.8b-8.3.el5_0.2
    fixed: vendor fix RHSA-2007:0964
  • Red Hat Enterprise Linux ES version 2.1 openssl 0.9.6b-48, openssl-perl 0.9.6b-48 Red Hat Enterprise Linux ES version 3 openssl 0.9.7a-33.24, openssl-perl 0.9.7a-33.24
    fixed: vendor fix RHSA-2007:0813
show 4 more
  • Red Hat Enterprise Linux ES version 4 openssl 0.9.7a-43.17.el4_6.1, openssl-perl 0.9.7a-43.17.el4_6.1
    fixed: vendor fix RHSA-2007:1003
  • Red Hat Enterprise Linux WS version 2.1 openssl 0.9.6b-48, openssl-perl 0.9.6b-48 Red Hat Enterprise Linux WS version 3 openssl 0.9.7a-33.24, openssl-perl 0.9.7a-33.24
    fixed: vendor fix RHSA-2007:0813
  • Red Hat Enterprise Linux WS version 4 openssl 0.9.7a-43.17.el4_6.1, openssl-perl 0.9.7a-43.17.el4_6.1
    fixed: vendor fix RHSA-2007:1003
  • Red Hat Linux Advanced Workstation 2.1 openssl 0.9.6b-48, openssl-perl 0.9.6b-48
    fixed: vendor fix RHSA-2007:0813

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

0.40% chance of exploitation in the next 30 days, higher than 34% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 1.2 AV:L/AC:H/Au:N/C:P/I:N/A:N

Classification

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.