CVE-2017-7892

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Sandstorm Cap'n Proto before 0.5.3.1 allows remote crashes related to a compiler optimization. A remote attacker can trigger a segfault in a 32-bit libcapnp application because Cap'n Proto relies on pointer arithmetic calculations that overflow. An example compiler with optimization that elides a bounds check in such calculations is Apple LLVM version 8.1.0 (clang-802.0.41). The attack vector is a crafted far pointer within a message.

Sandstorm Cap'n Proto en versiones anteriores a 0.5.3.1 permite bloqueos a distancia relacionados con una optimización del compilador. Un atacante remoto puede desencadernar un segfault en una aplicación libcapnp de 32 bits porque Cap'n Proto se basa en cálculos aritméticos de puntero que se desbordan. Un compilador de ejemplo con optimización que elide una comprobación de límites en tales cálculos es Apple LLVM versión 8.1.0 (clang-802.0.41). El vector de ataque es un puntero lejano elaborado dentro de una mensaje.

*Credits: N/A

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

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

2017-04-17 CVE Reserved
2017-04-17 CVE Published
2024-09-17 CVE Updated
2024-09-17 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (1)

URL	Tag	Source
https://github.com/sandstorm-io/capnproto/blob/master/security-advisories/2017-04-17-0-apple-clang-elides-bounds-check.md	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Capnproto Search vendor "Capnproto"		Capnproto Search vendor "Capnproto" for product "Capnproto"				<= 0.5.3 Search vendor "Capnproto" for product "Capnproto" and version " <= 0.5.3"		-		Affected