CVE-2007-4657: canonical ubuntu_linux
Vulnerability summary
CVE-2007-4657 is a high (CVSS 7.5) vulnerability in canonical ubuntu_linux. EPSS estimates a 2.99% chance of exploitation in the next 30 days, higher than 87.3% of scored vulnerabilities.
Not severe (CVSS 7.5, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 3Timeline
- 04-09-2007PublishedVulnerability first disclosed.
- 07-08-2024Last modifiedVulnerability information updated.
Description
Multiple integer overflows in PHP 4 before 4.4.8, and PHP 5 before 5.2.4, allow remote attackers to obtain sensitive information (memory contents) or cause a denial of service (thread crash) via a large len value to the (1) strspn or (2) strcspn function, which triggers an out-of-bounds read. NOTE: this affects different product versions than CVE-2007-3996.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
2.99%
Chance of exploitation in the next 30 days
Percentile
87%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.99% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferThe product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.
- CWE-189Numeric ErrorsWeaknesses in this category are related to improper calculation or conversion of numbers.
Affected systems
Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.
Canonical1 product
- ubuntu_linuxEOL6.06 | 6.10 | 7.04 | 7.10
Debian1 product
- debian_linuxEOL3.1 | 4.0
Php1 product
- php≥ 4.0.0, < 4.4.8 | ≥ 5.0.0, < 5.2.4
3 vendors · 3 products
References
29 links
- www.gentoo.org/security/en/glsa/glsa-200710-02.xmlVendor AdvisoryX Refsource GENTOOThird Party Advisory
- slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.335136Vendor AdvisoryX Refsource SLACKWAREMailing ListThird Party Advisory
Show all 29 references
- secweb.se/en/advisories/php-strcspn-information-leak-vulnerability/X Refsource MISCThird Party Advisory