CVE-2011-1005
The safe-level feature in Ruby 1.8.6 through 1.8.6-420, 1.8.7 through 1.8.7-330, and 1.8.8dev allows context-dependent attackers to modify strings via the Exception#to_s method, as demonstrated by changing an intended pathname.
Does this matter?
Lower severity and a low EPSS score (2.77%). Track it; it rarely justifies an emergency change on its own.
Description
The safe-level feature in Ruby 1.8.6 through 1.8.6-420, 1.8.7 through 1.8.7-330, and 1.8.8dev allows context-dependent attackers to modify strings via the Exception#to_s method, as demonstrated by changing an intended pathname.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
- EPSS
- 2.77% probability · 86th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-264
- Affected
- ruby-lang/ruby
- Source
- secalert@redhat.com
EPSS 2.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/054422.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/054436.html
- http://osvdb.org/70957
- http://secunia.com/advisories/43420
- http://secunia.com/advisories/43573
- http://support.apple.com/kb/HT5281
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:097
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:098
- http://www.openwall.com/lists/oss-security/2011/02/21/2Patch
- http://www.openwall.com/lists/oss-security/2011/02/21/5Patch
- http://www.redhat.com/support/errata/RHSA-2011-0908.html
- http://www.redhat.com/support/errata/RHSA-2011-0909.html
- http://www.redhat.com/support/errata/RHSA-2011-0910.html
- http://www.ruby-lang.org/en/news/2011/02/18/exception-methods-can-bypass-safe/Exploit, Patch, Vendor Advisory
- http://www.securityfocus.com/bid/46458
- http://www.vupen.com/english/advisories/2011/0539
- https://bugzilla.redhat.com/show_bug.cgi?id=678920Patch
- http://lists.apple.com/archives/security-announce/2012/May/msg00001.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/054422.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/054436.html
- http://osvdb.org/70957
- http://secunia.com/advisories/43420
- http://secunia.com/advisories/43573
- http://support.apple.com/kb/HT5281
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:097
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:098
- http://www.openwall.com/lists/oss-security/2011/02/21/2Patch
- http://www.openwall.com/lists/oss-security/2011/02/21/5Patch
- http://www.redhat.com/support/errata/RHSA-2011-0908.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.