MEDIUM
ruby: Memory allocation failure in Ruby regex engine (remotely exploitable DoS)
Published Aug 14, 2008
5.0
MEDIUMCVSS 2.0
EPSS 15.68%
Description
The regular expression engine (regex.c) in 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 allows remote attackers to cause a denial of service (infinite loop and crash) via multiple long requests to a Ruby socket, related to memory allocation failure, and as demonstrated against Webrick.
Affected products
No data.
OR
- 1.6.8
- 1.8.0
- 1.8.1
- 1.8.1
- 1.8.2
- 1.8.2
- 1.8.2
- 1.8.2
- 1.8.3
- 1.8.3
- 1.8.3
- 1.8.3
- 1.8.4
- 1.8.4
- 1.8.4
- 1.8.4
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.5
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.6
- 1.8.7
- 1.8.7
- 1.8.7
- 1.8.7
- 1.8.7
- 1.8.7
- 1.8.7
- 1.8.7
- 1.9.0
- 1.9.0
No data.
Red Hat Enterprise Linux 2.1
ruby-0:1.6.4-7.el2
Fixed · RHSA-2008:0895
Red Hat Enterprise Linux 3
ruby-0:1.6.8-13.el3
Fixed · RHSA-2008:0896
Red Hat Enterprise Linux 4
ruby-0:1.8.1-7.el4_7.1
Fixed · RHSA-2008:0897
Red Hat Enterprise Linux 5
ruby-0:1.8.5-5.el5_2.5
Fixed · RHSA-2008:0897
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 2.1 | ruby-0:1.6.4-7.el2 | Fixed | RHSA-2008:0895 |
| Red Hat Enterprise Linux 3 | ruby-0:1.6.8-13.el3 | Fixed | RHSA-2008:0896 |
| Red Hat Enterprise Linux 4 | ruby-0:1.8.1-7.el4_7.1 | Fixed | RHSA-2008:0897 |
| Red Hat Enterprise Linux 5 | ruby-0:1.8.5-5.el5_2.5 | Fixed | RHSA-2008:0897 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
15.68% 0.15678
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.15678
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (26 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 15.68% (0.15678) | 96.75th | v5 (v2026.06.15) |
| Jun 15, 2026 | 15.39% (0.15393) | 96.36th | v5 (v2026.06.15) |
| Jun 3, 2026 | 39.15% (0.39146) | 97.36th | v4 (v2025.03.14) |
| Jun 1, 2026 | 31.86% (0.31855) | 96.89th | v4 (v2025.03.14) |
| Feb 18, 2026 | 29.25% (0.29255) | 96.47th | v4 (v2025.03.14) |
| Dec 28, 2025 | 34.19% (0.34188) | 96.82th | v4 (v2025.03.14) |
| Dec 27, 2025 | 45.64% (0.45639) | 97.51th | v4 (v2025.03.14) |
| Nov 30, 2025 | 34.19% (0.34188) | 96.80th | v4 (v2025.03.14) |
| Oct 28, 2025 | 36.77% (0.36765) | 96.95th | v4 (v2025.03.14) |
| Oct 27, 2025 | 41.85% (0.41852) | 97.27th | v4 (v2025.03.14) |
| Oct 4, 2025 | 36.77% (0.36765) | 97.02th | v4 (v2025.03.14) |
| Oct 1, 2025 | 39.22% (0.39215) | 97.19th | v4 (v2025.03.14) |
| Sep 19, 2025 | 41.50% (0.41505) | 97.33th | v4 (v2025.03.14) |
| Jul 30, 2025 | 34.00% (0.34004) | 96.80th | v4 (v2025.03.14) |
| Mar 30, 2025 | 30.96% (0.30956) | 96.35th | v4 (v2025.03.14) |
| Mar 29, 2025 | 28.55% (0.28548) | 94.48th | v4 (v2025.03.14) |
| Mar 17, 2025 | 30.96% (0.30956) | 96.34th | v4 (v2025.03.14) |
| Dec 12, 2024 | 18.39% (0.18392) | 96.39th | v3 (v2023.03.01) |
| Sep 26, 2024 | 18.39% (0.18392) | 96.29th | v3 (v2023.03.01) |
| Mar 30, 2024 | 14.89% (0.14887) | 95.67th | v3 (v2023.03.01) |
| Feb 23, 2024 | 16.20% (0.16195) | 95.81th | v3 (v2023.03.01) |
| Jul 22, 2023 | 14.74% (0.14736) | 95.04th | v3 (v2023.03.01) |
| Mar 7, 2023 | 12.63% (0.12625) | 94.52th | v3 (v2023.03.01) |
| Mar 6, 2023 | 12.57% (0.12567) | 95.52th | v2 (v2022.01.01) |
| Apr 1, 2022 | 12.57% (0.12567) | 95.18th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.57% (0.12567) | 90.03th | v2 (v2022.01.01) |
Weaknesses (1)
References (30)
- http://lists.apple.com/archives/security-announce/2009/May/msg00002.html vendor-advisoryx_refsource_APPLE
- http://secunia.com/advisories/31430 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/32165 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/32219 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/32371 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/32372 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/33185 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/33398 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/35074 third-party-advisoryx_refsource_SECUNIA
- http://securityreason.com/securityalert/4158 third-party-advisoryx_refsource_SREASON
- http://support.apple.com/kb/HT3549 x_refsource_CONFIRM
- http://support.avaya.com/elmodocs2/security/ASA-2008-424.htm x_refsource_CONFIRM
- http://www.debian.org/security/2009/dsa-1695 vendor-advisoryx_refsource_DEBIAN
- http://www.redhat.com/support/errata/RHSA-2008-0895.html vendor-advisoryx_refsource_REDHAT
- http://www.redhat.com/support/errata/RHSA-2008-0897.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/bid/30682 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id?1021075 vdb-entryx_refsource_SECTRACK
- http://www.us-cert.gov/cas/techalerts/TA09-133A.html third-party-advisoryx_refsource_CERTUS Government Resource
- http://www.vupen.com/english/advisories/2009/1297 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2008-3443 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=459266 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/44688 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2008-3443
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9570 vdb-entrysignaturex_refsource_OVAL
- https://usn.ubuntu.com/651-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/691-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2008-3443
- https://www.exploit-db.com/exploits/6239 exploitx_refsource_EXPLOIT-DB
- https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00259.html vendor-advisoryx_refsource_FEDORA
- https://www.redhat.com/archives/fedora-package-announce/2008-October/msg00299.html vendor-advisoryx_refsource_FEDORA
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Aug 14, 2008
Updated Aug 7, 2024
Reserved Aug 1, 2008
Link CVE-2008-3443
CISA Vulnrichment
Updated n/a