4.3

CVE-2007-0988: canonical ubuntu_linux

Modified
Published 20-02-2007Last modified 07-08-2024
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Vulnerability summary

CVE-2007-0988 is a medium (CVSS 4.3) vulnerability in canonical ubuntu_linux. EPSS estimates a 2.40% chance of exploitation in the next 30 days, higher than 84% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 4.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
4.3/10
010
Medium · v2.0 (NVD)
EPSS score
2.40%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 6
DSA-1264-1RHSA-2007:0076RHSA-2007:0081RHSA-2007:0082RHSA-2007:0088RHSA-2007:0089

Timeline

  1. 20-02-2007
    PublishedVulnerability first disclosed.
  2. 07-08-2024
    Last modifiedVulnerability information updated.

Description

The zend_hash_init function in PHP 5 before 5.2.1 and PHP 4 before 4.4.5, when running on a 64-bit platform, allows context-dependent attackers to cause a denial of service (infinite loop) by unserializing certain integer expressions, which only cause 32-bit arguments to be used after the check for a negative value, as demonstrated by an "a:2147483649:{" argument.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.40%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

No change 0.00 pp

From 2.40% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication (CVSS vector). Other conditions: not stated in public data.

Canonical1 product
Php1 product
  • phpEOL≥ 4.0.0, < 4.4.5 | ≥ 5.0.0, < 5.2.1 | 4.0 | 4.0:beta_4_patch1 | 4.0:beta1 | 4.0:beta2 | 4.0:beta3 | 4.0:beta4 | 4.0:rc1 | 4.0:rc2

2 vendors · 2 products

References

44 links
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