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CVE-2016-9123

Integer Overflow in go-jose

7.5 HighFix available

go-jose before 1.0.5 suffers from a CBC-HMAC integer overflow on 32-bit architectures. An integer overflow could lead to authentication bypass for CBC-HMAC encrypted ciphertexts on 32-bit architectures.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
High
Availability
None

Exploit likelihood

2.15%Up 1.2 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 7.5

go-jose before 1.0.5 suffers from a CBC-HMAC integer overflow on 32-bit architectures. An integer overflow could lead to authentication bypass for CBC-HMAC encrypted ciphertexts on 32-bit architectures.

Record
CVE-2016-9123
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:P/A:N
Weakness
CWE-190
Updated
2026-11-02
CVE List No score

go-jose before 1.0.5 suffers from a CBC-HMAC integer overflow on 32-bit architectures. An integer overflow could lead to authentication bypass for CBC-HMAC encrypted ciphertexts on 32-bit architectures.

Record
CVE-2016-9123
Updated
2026-11-02
EUVDEUVD-2021-1255 No score

go-jose before 1.0.5 suffers from a CBC-HMAC integer overflow on 32-bit architectures. An integer overflow could lead to authentication bypass for CBC-HMAC encrypted ciphertexts on 32-bit architectures.

Record
EUVD-2021-1255
Updated
2026-11-03
GitHub AdvisoriesGHSA-3fx4-7f69-5mmg 7.5

Integer Overflow in go-jose

go-jose before 1.0.5 suffers from a CBC-HMAC integer overflow on 32-bit architectures. An integer overflow could lead to authentication bypass for CBC-HMAC encrypted ciphertexts on 32-bit architectures.

Record
GHSA-3fx4-7f69-5mmg
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-190
Updated
2026-11-02
OSV 7.5

go-jose before 1.0.5 suffers from a CBC-HMAC integer overflow on 32-bit architectures. An integer overflow could lead to authentication bypass for CBC-HMAC encrypted ciphertexts on 32-bit architectures.

Record
CVE-2016-9123
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2016-9123 7.5

go-jose before 1.0.5 suffers from a CBC-HMAC integer overflow on 32-bit architectures. An integer overflow could lead to authentication bypass for CBC-HMAC encrypted ciphertexts on 32-bit architectures.

Record
DEBIAN-CVE-2016-9123
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVGHSA-3fx4-7f69-5mmg 7.5

Integer Overflow in go-jose

go-jose before 1.0.5 suffers from a CBC-HMAC integer overflow on 32-bit architectures. An integer overflow could lead to authentication bypass for CBC-HMAC encrypted ciphertexts on 32-bit architectures.

Record
GHSA-3fx4-7f69-5mmg
CVSS 3.0
7.5 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-190
Updated
2026-11-02
OSVGO-2020-0009 No score

Integer overflow in github.com/square/go-jose

On 32-bit platforms an attacker can manipulate a ciphertext encrypted with AES-CBC with HMAC such that they can control how large the input buffer is when computing the HMAC authentication tag. This can can allow a manipulated ciphertext to be verified as authentic, opening the door for padding oracle attacks.

Record
GO-2020-0009
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
github.com/square/go-jose
Go
before 0.0.0-20160903044734-789a4c4bd4c1
0.0.0-20160903044734-789a4c4bd4c1
golang-gopkg-square-go-jose.v1
Debian:12
before 1.0.5-1
1.0.5-1
golang-gopkg-square-go-jose.v1
Debian:13
before 1.0.5-1
1.0.5-1
golang-gopkg-square-go-jose.v1
Debian:14
before 1.0.5-1
1.0.5-1

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-9123 is a high vulnerability (CVSS 7.5) in Go-jose Project Go-jose, published March 28, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.15%, the 82nd percentile. Fixed in github.com/square/go-jose 0.0.0-20160903044734-789a4c4bd4c1.

References

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