CVE-2017-9227

oniguruma: Out-of-bounds stack read in mbc_enc_len() during regular expression searching

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds read occurs in mbc_enc_len() during regular expression searching. Invalid handling of reg->dmin in forward_search_range() could result in an invalid pointer dereference, as an out-of-bounds read from a stack buffer.

Se ha descubierto un problema en Oniguruma 6.2.0, como se empleaba en Oniguruma-mod en Ruby hasta la versión 2.4.1 y en mbstring en PHP hasta la versión 7.1.5. Una lectura de pila fuera de límites tiene lugar en mbc_enc_len() durante una búsqueda de expresión regular. El manejo incorrecto de reg->dmin en forward_search_range() podría dar lugar a una desreferencia de puntero no válida, como una lectura fuera de límites desde un búfer de pila.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-05-24 CVE Reserved
2017-05-24 CVE Published
2023-05-08 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (6)

URL	Tag	Source
http://www.securityfocus.com/bid/100538	Third Party Advisory

URL	Date	SRC
https://github.com/kkos/oniguruma/issues/58	2024-08-05

URL	Date	SRC
https://github.com/kkos/oniguruma/commit/9690d3ab1f9bcd2db8cbe1fe3ee4a5da606b8814	2022-07-20

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:1296	2022-07-20
https://access.redhat.com/security/cve/CVE-2017-9227	2018-05-03
https://bugzilla.redhat.com/show_bug.cgi?id=1466739	2018-05-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Oniguruma Project Search vendor "Oniguruma Project"		Oniguruma Search vendor "Oniguruma Project" for product "Oniguruma"				6.2.0 Search vendor "Oniguruma Project" for product "Oniguruma" and version "6.2.0"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 5.6.0 < 5.6.31 Search vendor "Php" for product "Php" and version " >= 5.6.0 < 5.6.31"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.0.0 < 7.0.21 Search vendor "Php" for product "Php" and version " >= 7.0.0 < 7.0.21"		-		Affected
Php Search vendor "Php"		Php Search vendor "Php" for product "Php"				>= 7.1.0 < 7.1.7 Search vendor "Php" for product "Php" and version " >= 7.1.0 < 7.1.7"		-		Affected