A vulnerability found in nss. By this security vulnerability, nss client auth crash without a user certificate in the database and this can lead us to a segmentation fault or crash.

A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages, causing a denial of service for servers compiled with the NSS library. The highest threat from this vulnerability is to system availability. This flaw affects NSS versions before 3.58.

Mozilla Network Security Services (NSS), as used in Mozilla Firefox is vulnerable to a heap-based buffer overflow, caused by improper bounds checking when using certain cryptographic primitives. By sending an overly long argument, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause a denial of service.

A NULL pointer dereference issue was found in several CMS function. A specially crafted data could possibly crash nss.

External References:

https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS3.41.1releasenotes

It was found that Diffie Hellman Client key exchange handling in NSS 3.21.x was vulnerable to small subgroup confinement attack. An attacker could use this flaw to recover private keys by confining the client DH key to small subgroup of the desired group.

nss before version 3.30 is vulnerable to a remote denial of service during the session handshake when using SessionTicket extension and ECDHE-ECDSA.

Heap-based buffer overflow in the hashopen function in lib/dbm/src/hash.c in Mozilla Network Security Services (NSS) allows context-dependent attackers to have unspecified impact using a crafted cert8.db file.

Heap-based buffer overflow in the getpage function in lib/dbm/src/hpage.c in Mozilla Network Security Services (NSS) allows context-dependent attackers to have unspecified impact using a crafted cert8.db file.

Mozilla Network Security Services (NSS), as used in Mozilla Firefox could allow a local attacker to gain elevated privileges on the system, caused by a floating point exception in hashopen() in 'hash.c'. By using the NSS tool certutil and malformed cert8.db file, a local attacker could exploit this vulnerability to execute arbitrary code on the system with elevated privileges.

Heap-based buffer overflow in the allocsegs function in lib/dbm/src/hash.c in Mozilla Network Security Services (NSS) allows context-dependent attackers to have unspecified impact using a crafted cert8.db file.

Null pointer dereference vulnerability in NSS was found when server receives empty SSLv2 messages. This issue was introduced with the recent removal of SSLv2 protocol from upstream code in 3.24.0 and introduction of dedicated parser able to handle just sslv2-style hello messages.

Upstream patch:

https://hg.mozilla.org/projects/nss/rev/55ea60effd0d

An out-of-bounds write during Base64 decoding operation in the Network Security Services (NSS) library due to insufficient memory being allocated to the buffer. This results in a potentially exploitable crash.

External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2017-10/#CVE-2017-5461

Acknowledgements:

Name: the Mozilla project Upstream: Ronald Crane

Mozilla Network Security Services (NSS) before 3.23, as used in Mozilla Firefox before 47.0, allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via unknown vectors.

Use-after-free vulnerability in the ssl3HandleECDHServerKeyExchange function in Mozilla Network Security Services (NSS) before 3.21, as used in Mozilla Firefox before 44.0, allows remote attackers to cause a denial of service or possibly have unspecified other impact by making an SSL (1) DHE or (2) ECDHE handshake at a time of high memory consumption.

Use-after-free vulnerability in the PK11ImportDERPrivateKeyInfoAndReturnKey function in Mozilla Network Security Services (NSS) before 3.21.1, as used in Mozilla Firefox before 45.0, allows remote attackers to cause a denial of service or possibly have unspecified other impact via crafted key data with DER encoding.

Heap-based buffer overflow in Mozilla Network Security Services (NSS) before 3.19.2.3 and 3.20.x and 3.21.x before 3.21.1, as used in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7, allows remote attackers to execute arbitrary code via crafted ASN.1 data in an X.509 certificate.

Heap-based buffer overflow in the ASN.1 decoder in Mozilla Network Security Services (NSS) before 3.19.2.1 and 3.20.x before 3.20.1, as used in Firefox before 42.0 and Firefox ESR 38.x before 38.4 and other products, allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via crafted OCTET STRING data.

Integer overflow in the PLARENAALLOCATE implementation in Netscape Portable Runtime (NSPR) in Mozilla Network Security Services (NSS) before 3.19.2.1 and 3.20.x before 3.20.1, as used in Firefox before 42.0 and Firefox ESR 38.x before 38.4 and other products, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via unspecified vectors.

Mozilla Firefox could allow a remote attacker to execute arbitrary code on the system, caused by a use-after-poison in the secasn1dparseleaf() function. By persuading a victim to visit a specially-crafted Web site, a remote attacker could exploit this vulnerability using unknown attack vectors to execute arbitrary code on the vulnerable system or cause a denial of service.

Last updated 24 July 2024

Last updated 24 July 2024

Mozilla Network Security Services (NSS) could allow a remote attacker to bypass security restrictions, caused by the failure to ensure that the DER encoding of an ASN.1 length is properly formed by the definitelengthdecoder function. An attacker could exploit this vulnerability using a long byte sequence for an encoding to bypass restrictions and conduct data-smuggling attacks.

Mozilla Network Security Services (NSS) before 3.16.2.1, 3.16.x before 3.16.5, and 3.17.x before 3.17.1, as used in Mozilla Firefox before 32.0.3, Mozilla Firefox ESR 24.x before 24.8.1 and 31.x before 31.1.1, Mozilla Thunderbird before 24.8.1 and 31.x before 31.1.2, Mozilla SeaMonkey before 2.29.1, Google Chrome before 37.0.2062.124 on Windows and OS X, and Google Chrome OS before 37.0.2062.120, does not properly parse ASN.1 values in X.509 certificates, which makes it easier for remote attackers to spoof RSA signatures via a crafted certificate, aka a "signature malleability" issue.

Mozilla Firefox and Thunderbird could allow a remote attacker to execute arbitrary code on the system, caused by a use-after-free error in the PK11ImportCert() function when adding NSSCertificate structures. By persuading a victim to visit a specially-crafted Web site, a remote attacker could exploit this vulnerability using unknown attack vectors to execute arbitrary code on the vulnerable system or cause a denial of service.

A security issue has been reported in NSS, which can be exploited by a malicious user to disclose certain information.

The issue arises due to an error within the "sslDo1stHandshake()" function in lib/ssl/sslsecur.c, which can be exploited to potentially return unencrypted and unauthenticated data from PRRecv. Successful exploitation requires false start to be enabled.

The issue is said to be fixed in NSS 3.15.4.

References: https://bugs.gentoo.org/showbug.cgi?id=498172 https://developer.mozilla.org/en-US/docs/NSS/NSS3.15.4releasenotes

Upstream bug: https://bugzilla.mozilla.org/showbug.cgi?id=919877

Patch: https://bugzilla.mozilla.org/attachment.cgi?id=825813

Integer overflow in Mozilla Network Security Services (NSS) 3.15 before 3.15.3 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a large size value.

Mozilla Network Security Services (NSS) 3.14 before 3.14.5 and 3.15 before 3.15.3 allows remote attackers to cause a denial of service or possibly have unspecified other impact via invalid handshake packets.

The CERTVerifyCert function in lib/certhigh/certvfy.c in Mozilla Network Security Services (NSS) 3.15 before 3.15.3 provides an unexpected return value for an incompatible key-usage certificate when the CERTVerifyLog argument is valid, which might allow remote attackers to bypass intended access restrictions via a crafted certificate.

Mozilla Network Security Services (NSS) before 3.15.2 does not ensure that data structures are initialized before read operations, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via vectors that trigger a decryption failure.

The CERTDecodeCertPackage function in Mozilla Network Security Services (NSS), as used in Mozilla Firefox before 20.0, Firefox ESR 17.x before 17.0.5, Thunderbird before 17.0.5, Thunderbird ESR 17.x before 17.0.5, SeaMonkey before 2.17, and other products, allows remote attackers to cause a denial of service (out-of-bounds read and memory corruption) via a crafted certificate.