CVE-2017-5461

nss: Write beyond bounds caused by bugs in Base64 de/encoding in nssb64d.c and nssb64e.c (MFSA 2017-10)

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Mozilla Network Security Services (NSS) before 3.21.4, 3.22.x through 3.28.x before 3.28.4, 3.29.x before 3.29.5, and 3.30.x before 3.30.1 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact by leveraging incorrect base64 operations.

Los servicios de Seguridad de Red de Mozilla (Network Security Services o NSS) en versiones anteriores a la 3.21.4, versiones de las 3.22.x a las 3.28.x anteriores a la 3.28.4, versiones 3.29.x anteriores a la 3.29.5 y versiones 3.30.x anteriores a la 3.30.1 permiten que atacantes remotos provoquen una denegación de servicio (escritura fuera de límites) o que, probablemente, causen otro impacto no especificado aprovechando operaciones en base64 incorrectas.

An out-of-bounds write flaw was found in the way NSS performed certain Base64-decoding operations. An attacker could use this flaw to create a specially crafted certificate which, when parsed by NSS, could cause it to crash or execute arbitrary code, using the permissions of the user running an application compiled against the NSS library.

*Credits: N/A

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

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

2017-01-13 CVE Reserved
2017-04-20 CVE Published
2024-08-05 CVE Updated
2024-08-11 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-787: Out-of-bounds Write

CAPEC

References (22)

URL	Tag	Source
http://www.securityfocus.com/bid/98050	Third Party Advisory
http://www.securitytracker.com/id/1038320	Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html	X_refsource_misc

URL	Date	SRC

URL	Date	SRC
http://www.debian.org/security/2017/dsa-3831	2021-07-20
http://www.debian.org/security/2017/dsa-3872	2021-07-20
http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html	2021-07-20
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html	2021-07-20
https://access.redhat.com/errata/RHSA-2017:1100	2021-07-20
https://access.redhat.com/errata/RHSA-2017:1101	2021-07-20
https://access.redhat.com/errata/RHSA-2017:1102	2021-07-20
https://access.redhat.com/errata/RHSA-2017:1103	2021-07-20

URL	Date	SRC
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.21.4_release_notes	2021-07-20
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.28.4_release_notes	2021-07-20
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.29.5_release_notes	2021-07-20
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.30.1_release_notes	2021-07-20
https://security.gentoo.org/glsa/201705-04	2021-07-20
https://www.mozilla.org/en-US/security/advisories/mfsa2017-10/#CVE-2017-5461	2021-07-20
https://www.mozilla.org/en-US/security/advisories/mfsa2017-11/#CVE-2017-5461	2021-07-20
https://www.mozilla.org/en-US/security/advisories/mfsa2017-12/#CVE-2017-5461	2021-07-20
https://www.mozilla.org/en-US/security/advisories/mfsa2017-13/#CVE-2017-5461	2021-07-20
https://access.redhat.com/security/cve/CVE-2017-5461	2017-04-20
https://bugzilla.redhat.com/show_bug.cgi?id=1440080	2017-04-20

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				< 3.21.4 Search vendor "Mozilla" for product "Network Security Services" and version " < 3.21.4"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				> 3.22 < 3.28.4 Search vendor "Mozilla" for product "Network Security Services" and version " > 3.22 < 3.28.4"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				>= 3.29 < 3.29.5 Search vendor "Mozilla" for product "Network Security Services" and version " >= 3.29 < 3.29.5"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				>= 3.30 < 3.30.1 Search vendor "Mozilla" for product "Network Security Services" and version " >= 3.30 < 3.30.1"		-		Affected