UpHeron
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Servers and applications

CVE-2008-3655

Ruby 1.8.5 and earlier, 1.8.6 through 1.8.6-p286, 1.8.7 through 1.8.7-p71, and 1.9 through r18423 does not properly restrict access to critical variables and methods at various safe levels, which allows context-dependent attackers to bypass intended access restrictions via (1) untrace_var, (2) $PROGRAM_NAME, and (3) syslog at safe level 4, and (4) insecure methods at safe levels 1 through 3.

Severity
High 7.5
Published
13 Aug 2008
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
14% in the next 30 daysHigher than 96% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-264
Attack
Over the network · No login needed
Attacker can
Read some data · Change some data · Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Sources
NVD

Affected software

SoftwareAffected versions
RubyServers and applications · cpe:a:ruby-lang:ruby
  • Version 1.9.0
  • Version 1.8.7-p71
  • Version 1.8.7-p22
  • Version 1.8.7-p17
All 47 release lines
  • Every version up to 1.8.5
  • Version 1.6.8
  • Version 1.8.0
  • Version 1.8.1
  • Version 1.8.1--9
  • Version 1.8.2-preview2
  • Version 1.8.2-preview3
  • Version 1.8.2-preview4
  • Version 1.8.2
  • Version 1.8.3-preview1
  • Version 1.8.3-preview2
  • Version 1.8.3-preview3
  • Version 1.8.3
  • Version 1.8.4-preview1
  • Version 1.8.4-preview2
  • Version 1.8.4-preview3
  • Version 1.8.4
  • Version 1.8.5-preview1
  • Version 1.8.5-preview2
  • Version 1.8.5-preview3
  • Version 1.8.5-preview4
  • Version 1.8.5-preview5
  • Version 1.8.5-p2
  • Version 1.8.5-p11
  • Version 1.8.5-p12
  • Version 1.8.5-p35
  • Version 1.8.5-p113
  • Version 1.8.5-p115
  • Version 1.8.6-preview1
  • Version 1.8.6-preview2
  • Version 1.8.6-preview3
  • Version 1.8.6
  • Version 1.8.6-p36
  • Version 1.8.6-p110
  • Version 1.8.6-p111
  • Version 1.8.6-p114
  • Version 1.8.6-p230
  • Version 1.8.6-p286
  • Version 1.8.7-preview1
  • Version 1.8.7-preview2
  • Version 1.8.7-preview3
  • Version 1.8.7-preview4
  • Version 1.8.7
  • Version 1.8.7-p17
  • Version 1.8.7-p22
  • Version 1.8.7-p71
  • Version 1.9.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2008-3655
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2008-3655