strtod.c, as used in the zend_strtod function in PHP 5.2 before 5.2.17 and 5.3 before…
Priority LOW 39CWE-189Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-189 and the CVSS impact.
Summary
strtod.c, as used in the zend_strtod function in PHP 5.2 before 5.2.17 and 5.3 before 5.3.5, and other products, allows context-dependent attackers to cause a denial of service (infinite loop) via a certain floating-point value in scientific notation, which is not properly handled in x87 FPU registers, as demonstrated using 2.2250738585072011e-308.
Why it matters now
EPSS 0.15103 96th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed Red Hat: 2 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 22
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:php:php:5.2.0:*:*:*:*:*:*:* | 5.2.0 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.1:*:*:*:*:*:*:* | 5.2.1 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.2:*:*:*:*:*:*:* | 5.2.2 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.3:*:*:*:*:*:*:* | 5.2.3 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.4:*:*:*:*:*:*:* | 5.2.4 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.5:*:*:*:*:*:*:* | 5.2.5 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.6:*:*:*:*:*:*:* | 5.2.6 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.7:*:*:*:*:*:*:* | 5.2.7 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.8:*:*:*:*:*:*:* | 5.2.8 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.9:*:*:*:*:*:*:* | 5.2.9 | Vulnerable | PHP |
- cpe:2.3:a:php:php:5.2.0:*:*:*:*:*:*:* Versions 5.2.0 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.1:*:*:*:*:*:*:* Versions 5.2.1 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.2:*:*:*:*:*:*:* Versions 5.2.2 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.3:*:*:*:*:*:*:* Versions 5.2.3 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.4:*:*:*:*:*:*:* Versions 5.2.4 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.5:*:*:*:*:*:*:* Versions 5.2.5 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.6:*:*:*:*:*:*:* Versions 5.2.6 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.7:*:*:*:*:*:*:* Versions 5.2.7 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.8:*:*:*:*:*:*:* Versions 5.2.8 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.9:*:*:*:*:*:*:* Versions 5.2.9 Vulnerable ·PHP
Show 12 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:php:php:5.2.10:*:*:*:*:*:*:* | 5.2.10 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.11:*:*:*:*:*:*:* | 5.2.11 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.12:*:*:*:*:*:*:* | 5.2.12 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.13:*:*:*:*:*:*:* | 5.2.13 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.14:*:*:*:*:*:*:* | 5.2.14 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.15:*:*:*:*:*:*:* | 5.2.15 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.2.16:*:*:*:*:*:*:* | 5.2.16 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.3.0:*:*:*:*:*:*:* | 5.3.0 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.3.1:*:*:*:*:*:*:* | 5.3.1 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.3.2:*:*:*:*:*:*:* | 5.3.2 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.3.3:*:*:*:*:*:*:* | 5.3.3 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.3.4:*:*:*:*:*:*:* | 5.3.4 | Vulnerable | PHP |
- cpe:2.3:a:php:php:5.2.10:*:*:*:*:*:*:* Versions 5.2.10 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.11:*:*:*:*:*:*:* Versions 5.2.11 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.12:*:*:*:*:*:*:* Versions 5.2.12 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.13:*:*:*:*:*:*:* Versions 5.2.13 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.14:*:*:*:*:*:*:* Versions 5.2.14 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.15:*:*:*:*:*:*:* Versions 5.2.15 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.2.16:*:*:*:*:*:*:* Versions 5.2.16 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.3.0:*:*:*:*:*:*:* Versions 5.3.0 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.3.1:*:*:*:*:*:*:* Versions 5.3.1 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.3.2:*:*:*:*:*:*:* Versions 5.3.2 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.3.3:*:*:*:*:*:*:* Versions 5.3.3 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.3.4:*:*:*:*:*:*:* Versions 5.3.4 Vulnerable ·PHP
Remediation
Red Hat 2 advisories
- RHSA-2011:0196 Released 2011-02-03 · Red Hat rating Moderatephp53 security update
- Red Hat Enterprise Linux (v. 5.6.z server) php53-5.3.3-1.el5_6.1, php53-5.3.3-1.el5_6.1.i386, php53-5.3.3-1.el5_6.1.ia64 +47
- RHSA-2011:0195 Released 2011-02-03 · Red Hat rating Moderatephp security update
- Red Hat Enterprise Linux Desktop Optional (v. 6) php-5.3.2-6.el6_0.1, php-bcmath-5.3.2-6.el6_0.1, php-cli-5.3.2-6.el6_0.1 +23
- Red Hat Enterprise Linux HPC Node Optional (v. 6) php-5.3.2-6.el6_0.1, php-bcmath-5.3.2-6.el6_0.1, php-cli-5.3.2-6.el6_0.1 +23
- Red Hat Enterprise Linux Server (v. 6) php-5.3.2-6.el6_0.1, php-cli-5.3.2-6.el6_0.1, php-common-5.3.2-6.el6_0.1 +9
- Red Hat Enterprise Linux Server Optional (v. 6) php-5.3.2-6.el6_0.1, php-bcmath-5.3.2-6.el6_0.1, php-dba-5.3.2-6.el6_0.1 +12
- Red Hat Enterprise Linux Workstation (v. 6) php-5.3.2-6.el6_0.1, php-cli-5.3.2-6.el6_0.1, php-common-5.3.2-6.el6_0.1 +9
- Red Hat Enterprise Linux Workstation Optional (v. 6) php-5.3.2-6.el6_0.1, php-bcmath-5.3.2-6.el6_0.1, php-dba-5.3.2-6.el6_0.1 +12
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux (v. 5.6.z server) | Fixed | RHSA-2011:0196 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2011:0195 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2011:0195 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2011:0195 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2011:0195 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2011:0195 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2011:0195 |
Not affected: 2 products
- Red Hat Enterprise Linux 4
- Red Hat Enterprise Linux 5
Timeline
- 2026-10-02 Threatist record created from CVE-2010-4645
- 2026-10-03 Alias added: GHSA-89c3-82jr-pppj
References
Exploit 2
Advisory 10
Other 9
- ADV-2011-0077
- [oss-security] 20110105 Re: possible flaw in widely used strtod.c implementation
- http://hal.archives-ouvertes.fr/docs/00/28/14/29/PDF/floating-point-article.pdf
- http://www.exploringbinary.com/php-hangs-on-numeric-value-2-2250738585072011e-308/
- ADV-2011-0198
- ADV-2011-0066
- http://support.apple.com/kb/HT5002
- [oss-security] 20110106 Re: possible flaw in widely used strtod.c implementation
- http://www.openwall.com/lists/oss-security/2023/05/14/3
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Sources
- CVE-2010-4645 · CVE Program
- CVE-2010-4645 · NVD
- FIRST EPSS
- GHSA-89c3-82jr-pppj · GitHub Advisory Database · CC BY 4.0
- CVE-2010-4645 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences