CVE-2017-9229

oniguruma: Invalid pointer dereference in left_adjust_char_head()

Severity Score

7.5

*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 SIGSEGV occurs in left_adjust_char_head() during regular expression compilation. Invalid handling of reg->dmax in forward_search_range() could result in an invalid pointer dereference, normally as an immediate denial-of-service condition.

Se descubrió un problema en Oniguruma versión 6.2.0, como es usado en Oniguruma-mod en Ruby hasta versión 2.4.1 y mbstring en PHP hasta versión 7.1.5. Un SIGSEGV se produce en la función left_adjust_char_head() durante la compilación de expresiones regulares. El manejo no válido de reg-)dmax en forward_search_range() podría resultar en una desreferencia de puntero no válida, normalmente como una condición de denegación de servicio inmediata.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

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-476: NULL Pointer Dereference
CWE-787: Out-of-bounds Write

CAPEC

References (5)

URL	Tag	Source

URL	Date	SRC
https://github.com/kkos/oniguruma/issues/59	2024-08-05

URL	Date	SRC
https://github.com/kkos/oniguruma/commit/b690371bbf97794b4a1d3f295d4fb9a8b05d402d	2022-09-01

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:1296	2022-09-01
https://access.redhat.com/security/cve/CVE-2017-9229	2018-05-03
https://bugzilla.redhat.com/show_bug.cgi?id=1466746	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"				<= 7.1.5 Search vendor "Php" for product "Php" and version " <= 7.1.5"		oniguruma-mod		Affected
Ruby-lang Search vendor "Ruby-lang"		Ruby Search vendor "Ruby-lang" for product "Ruby"				<= 2.4.1 Search vendor "Ruby-lang" for product "Ruby" and version " <= 2.4.1"		oniguruma-mod		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