CVE-2018-10546
php: Infinite loop in ext/iconv/iconv.c when using stream filter with convert.incov on invalid sequence leads to denial-of-service
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
1Exploited in Wild
-Decision
Descriptions
An issue was discovered in PHP before 5.6.36, 7.0.x before 7.0.30, 7.1.x before 7.1.17, and 7.2.x before 7.2.5. An infinite loop exists in ext/iconv/iconv.c because the iconv stream filter does not reject invalid multibyte sequences.
Se ha descubierto un problema en PHP en versiones anteriores a la 5.6.36, versiones 7.0.x anteriores a la 7.0.30, versiones 7.1.x anteriores a la 7.1.17 y versiones 7.2.x anteriores a la 7.2.5. Existe un bucle infinito en ext/iconv/iconv.c debido a que el filtro de transmisiones iconv no rechaza las secuencias multibyte no válidas.
An infinite loop vulnerability was found in ext/iconv/iconv.c in PHP due to the iconv stream not rejecting invalid multibyte sequences. A remote attacker could use this vulnerability to hang the php process and consume resources.
It was discovered that PHP incorrectly handled opcache access controls when configured to use PHP-FPM. A local user could possibly use this issue to obtain sensitive information from another user's PHP applications. It was discovered that the PHP iconv stream filter incorrect handled certain invalid multibyte sequences. A remote attacker could possibly use this issue to cause PHP to hang, resulting in a denial of service. Various other issues were also addressed.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2018-04-29 CVE Reserved
- 2018-04-29 CVE Published
- 2018-05-03 First Exploit
- 2024-08-05 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CAPEC
References (15)
| URL | Tag | Source |
|---|---|---|
| http://www.securityfocus.com/bid/104019 | Third Party Advisory | |
| http://www.securitytracker.com/id/1040807 | Third Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/06/msg00005.html | Mailing List |
|
| https://security.netapp.com/advisory/ntap-20180607-0003 | Third Party Advisory |
|
| https://www.tenable.com/security/tns-2018-12 | Third Party Advisory |
| URL | Date | SRC |
|---|---|---|
| https://github.com/dsfau/CVE-2018-10546 | 2018-05-03 |
| URL | Date | SRC |
|---|---|---|
| http://php.net/ChangeLog-5.php | 2019-10-03 | |
| http://php.net/ChangeLog-7.php | 2019-10-03 | |
| https://bugs.php.net/bug.php?id=76249 | 2019-10-03 |
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2019:2519 | 2019-10-03 | |
| https://security.gentoo.org/glsa/201812-01 | 2019-10-03 | |
| https://usn.ubuntu.com/3646-1 | 2019-10-03 | |
| https://www.debian.org/security/2018/dsa-4240 | 2019-10-03 | |
| https://access.redhat.com/security/cve/CVE-2018-10546 | 2019-08-19 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1573802 | 2019-08-19 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | < 5.6.36 Search vendor "Php" for product "Php" and version " < 5.6.36" | - |
Affected
| ||||||
| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | >= 7.0.0 < 7.0.30 Search vendor "Php" for product "Php" and version " >= 7.0.0 < 7.0.30" | - |
Affected
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| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | >= 7.1.0 < 7.1.17 Search vendor "Php" for product "Php" and version " >= 7.1.0 < 7.1.17" | - |
Affected
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| Php Search vendor "Php" | Php Search vendor "Php" for product "Php" | >= 7.2.0 < 7.2.5 Search vendor "Php" for product "Php" and version " >= 7.2.0 < 7.2.5" | - |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 17.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "17.10" | - |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
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| Netapp Search vendor "Netapp" | Storage Automation Store Search vendor "Netapp" for product "Storage Automation Store" | - | - |
Affected
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