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CVE-2022-30634

Indefinite hang with large buffers on Windows in crypto/rand

7.5 HighFix available

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker to cause an indefinite hang by passing a buffer larger than 1 << 32 - 1 bytes.

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
None
Availability
High

Exploit likelihood

2.28%Up 1.3 points since Jul 16, 2022
90%50%10%1%

What each source reports

NVD Score used 7.5

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker to cause an indefinite hang by passing a buffer larger than 1 << 32 - 1 bytes.

Record
CVE-2022-30634
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-835
Updated
2026-11-02
CVE List No score

Indefinite hang with large buffers on Windows in crypto/rand

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker to cause an indefinite hang by passing a buffer larger than 1 << 32 - 1 bytes.

Record
CVE-2022-30634
Updated
2026-11-02
EUVDEUVD-2022-52465 No score

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker to cause an indefinite hang by passing a buffer larger than 1 << 32 - 1 bytes.

Record
EUVD-2022-52465
Updated
2026-11-03
GitHub AdvisoriesGHSA-vfh9-chgv-wfph 7.5

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker...

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker to cause an indefinite hang by passing a buffer larger than 1 << 32 - 1 bytes.

Record
GHSA-vfh9-chgv-wfph
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-835
Updated
2026-11-02
OSVALPINE-CVE-2022-30634 7.5

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker to cause an indefinite hang by passing a buffer larger than 1 << 32 - 1 bytes.

Record
ALPINE-CVE-2022-30634
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-03
OSVAZL-78962 7.5

CVE-2022-30634 affecting package golang 1.25.7-1

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker to cause an indefinite hang by passing a buffer larger than 1 << 32 - 1 bytes.

Record
AZL-78962
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 12 moreShow less
OSVAZL-98796 7.5

CVE-2022-30634 affecting package golang 1.27.1-1

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker to cause an indefinite hang by passing a buffer larger than 1 << 32 - 1 bytes.

Record
AZL-98796
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVBELL-CVE-2022-30634 7.5

CVE-2022-30634 does not affect BellSoft software

Record
BELL-CVE-2022-30634
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVOESA-2022-1783 7.5

golang security update

The Go Programming Language

Security Fix(es):

When httputil.ReverseProxy.ServeHTTP was called with a Request.Header map containing a nil value for the X-Forwarded-For header, ReverseProxy would set the client IP as the value of the X-Forwarded-For header, contrary to its documentation. In the more usual case where a Director function set the X-Forwarded-For header value to nil, ReverseProxy would leave the header unmodified as expected.(CVE-2022-32148)

Calling Decoder.Decode on a message which contains deeply nested structures can cause a panic due to stack exhaustion.(CVE-2022-30635)

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker to cause an indefinite hang by passing a buffer larger than 1 << 32 - 1 bytes. (CVE-2022-30634)

Calling Unmarshal on a XML document into a Go struct which has a nested field that uses the any field tag can cause a panic due to stack exhaustion.(CVE-2022-30633)

Calling Glob on a path which contains a large number of path separators can cause a panic due to stack exhaustion.(CVE-2022-30632)

Calling Reader.Read on an archive containing a large number of concatenated 0-length compressed files can cause a panic due to stack exhaustion.(CVE-2022-30631)

As required by RFC 8446, section 4.6.1, ticket_age_add now holds arandom 32-bit value. Before this change, this value was always setto 0.(CVE-2022-30629)

Calling Decoder.Skip when parsing a deeply nested XML document can cause a panic due to stack exhaustion.(CVE-2022-28131)

Calling any of the Parse functions on Go source code which contains deeply nested types or declarations can cause a panic due to stack exhaustion.(CVE-2022-1962)

The HTTP/1 client accepted some invalid Transfer-Encoding headers as indicating a chunked encoding. This could potentially allow for request smuggling, but only if combined with an intermediate server that also improperly failed to reject the header as invalid.(CVE-2022-1705)

Record
OESA-2022-1783
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2022-30634 7.5

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker to cause an indefinite hang by passing a buffer larger than 1 << 32 - 1 bytes.

Record
UBUNTU-CVE-2022-30634
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVBIT-golang-2022-30634 No score

Indefinite hang with large buffers on Windows in crypto/rand

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker to cause an indefinite hang by passing a buffer larger than 1 << 32 - 1 bytes.

Record
BIT-golang-2022-30634
Updated
2026-11-02
OSV No score

Indefinite hang with large buffers on Windows in crypto/rand

Infinite loop in Read in crypto/rand before Go 1.17.11 and Go 1.18.3 on Windows allows attacker to cause an indefinite hang by passing a buffer larger than 1 << 32 - 1 bytes.

Record
CVE-2022-30634
Updated
2026-11-02
OSVGO-2022-0477 No score

Indefinite hang with large buffers on Windows in crypto/rand

On Windows, rand.Read will hang indefinitely if passed a buffer larger than 1 << 32 - 1 bytes.

Record
GO-2022-0477
Updated
2026-11-02
OSVopenSUSE-SU-2024:12123-1 No score

go1.17-1.17.11-1.1 on GA media

These are all security issues fixed in the go1.17-1.17.11-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:12123-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:12124-1 No score

go1.18-1.18.3-1.1 on GA media

These are all security issues fixed in the go1.18-1.18.3-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:12124-1
Updated
2026-11-02
OSVSUSE-SU-2022:2004-1 No score

Security update for go1.17

This update for go1.17 fixes the following issues:

Update to go1.17.11 (released 2022-06-01) (bsc#1190649):

  • CVE-2022-30634: Fixed crypto/rand rand.Read hangs with extremely large buffers (bsc#1200134).
  • CVE-2022-30629: Fixed crypto/tls session tickets lack random ticket_age_add (bsc#1200135).
  • CVE-2022-29804: Fixed path/filepath Clean(.\c:) returns c: on Windows (bsc#1200137).
  • CVE-2022-30580: Fixed os/exec empty Cmd.Path can result in running unintended binary on Windows (bsc#1200136).
Record
SUSE-SU-2022:2004-1
Updated
2026-11-02
OSVSUSE-SU-2022:2005-1 No score

Security update for go1.18

This update for go1.18 fixes the following issues:

Update to go1.18.3 (released 2022-06-01) (bsc#1193742):

  • CVE-2022-30634: Fixed crypto/rand rand.Read hangs with extremely large buffers (bsc#1200134).
  • CVE-2022-30629: Fixed crypto/tls session tickets lack random ticket_age_add (bsc#1200135).
  • CVE-2022-29804: Fixed path/filepath Clean(.\c:) returns c: on Windows (bsc#1200137).
  • CVE-2022-30580: Fixed os/exec empty Cmd.Path can result in running unintended binary on Windows (bsc#1200136).
Record
SUSE-SU-2022:2005-1
Updated
2026-11-02
OSVSUSE-SU-2023:2312-1 No score

Security update for go1.18-openssl

This update for go1.18-openssl fixes the following issues:

  • Add subpackage go1.x-libstd compiled shared object libstd.so (jsc#PED-1962)

    • Main go1.x package included libstd.so in previous versions
    • Split libstd.so into subpackage that can be installed standalone
    • Continues the slimming down of main go1.x package by 40 Mb
    • Experimental and not recommended for general use, Go currently has no ABI
    • Upstream Go has not committed to support buildmode=shared long-term
    • Do not use in packaging, build static single binaries (the default)
    • Upstream Go go1.x binary releases do not include libstd.so
    • go1.x Suggests go1.x-libstd so not installed by default Recommends
    • go1.x-libstd does not Require: go1.x so can install standalone
    • Provides go-libstd unversioned package name
    • Fix build step -buildmode=shared std to omit -linkshared
  • Packaging improvements:

    • go1.x Suggests go1.x-doc so not installed by default Recommends
    • Use Group: Development/Languages/Go instead of Other
  • Improvements to go1.x packaging spec:

    • On Tumbleweed bootstrap with current default gcc13 and gccgo118
    • On SLE-12 aarch64 ppc64le ppc64 remove overrides to bootstrap using go1.x package (%bcond_without gccgo). This is no longer needed on current SLE-12:Update and removing will consolidate the build configurations used.
    • Change source URLs to go.dev as per Go upstream
    • On x86_64 export GOAMD64=v1 as per the current baseline. At this time forgo GOAMD64=v3 option for x86_64_v3 support.
    • On x86_64 %define go_amd64=v1 as current instruction baseline
  • Update to version 1.18.10.1 cut from the go1.18-openssl-fips branch at the revision tagged go1.18.10-1-openssl-fips.

    • Merge branch dev.boringcrypto.go1.18 into go1.18-openssl-fips
    • Merge go1.18.10 into dev.boringcrypto.go1.18
  • go1.18.10 (released 2023-01-10) includes fixes to cgo, the compiler, the linker, and the crypto/x509, net/http, and syscall packages. Refs bsc#1193742 go1.18 release tracking

    • go#57705 misc/cgo: backport needed for dlltool fix
    • go#57426 crypto/x509: Verify on macOS does not return typed errors
    • go#57344 cmd/compile: the loong64 intrinsic for CompareAndSwapUint32 function needs to sign extend its 'old' argument.
    • go#57338 syscall, internal/poll: accept4-to-accept fallback removal broke Go code on Synology DSM 6.2 ARM devices
    • go#57213 os: TestLstat failure on Linux Aarch64
    • go#57211 reflect: sort.SliceStable sorts incorrectly on arm64 with less function created with reflect.MakeFunc and slice of sufficient length
    • go#57057 cmd/go: remove test dependency on gopkg.in service
    • go#57054 cmd/go: TestScript/version_buildvcs_git_gpg (if enabled) fails on linux longtest builders
    • go#57044 cgo: malformed DWARF TagVariable entry
    • go#57028 cmd/cgo: Wrong types in compiler errors with clang 14
    • go#56833 cmd/link/internal/ppc64: too-far trampoline is reused
    • go#56711 net: reenable TestLookupDotsWithRemoteSource and TestLookupGoogleSRV with a different target
    • go#56323 net/http: bad handling of HEAD requests with a body
Record
SUSE-SU-2023:2312-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
go
Alpine:v3.16
1.18.0 up to 1.18.4-r0
1.18.4-r0
golang
Azure Linux:3
through 1.25.7-1 None known
golang
Azure Linux:3
1.27.0 to 1.27.1-1 None known
golang
Bitnami
before 1.17.11, 1.18.0 up to 1.18.3
1.17.111.18.3
stdlib
Go
before 1.17.11, 1.18.0-0 up to 1.18.3
1.17.111.18.3
golang
openEuler:20.03-LTS-SP1
From an advisory covering 10 CVEs
before 1.15.7-14.oe1
1.15.7-14.oe1
golang
openEuler:20.03-LTS-SP3
From an advisory covering 10 CVEs
before 1.15.7-14.oe1
1.15.7-14.oe1
golang
openEuler:22.03-LTS
From an advisory covering 10 CVEs
before 1.17.3-5.oe2203
1.17.3-5.oe2203
go1.17
SUSE:Linux Enterprise Module for Development Tools 15 SP3
From an advisory covering 4 CVEs
before 1.17.11-150000.1.37.1
1.17.11-150000.1.37.1
go1.17
SUSE:Linux Enterprise Module for Development Tools 15 SP4
From an advisory covering 4 CVEs
before 1.17.11-150000.1.37.1
1.17.11-150000.1.37.1
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Affected packages
PackageAffectedFixed
go1.17
openSUSE:Leap 15.3
From an advisory covering 4 CVEs
before 1.17.11-150000.1.37.1
1.17.11-150000.1.37.1
go1.17
openSUSE:Leap 15.4
From an advisory covering 4 CVEs
before 1.17.11-150000.1.37.1
1.17.11-150000.1.37.1
go1.18
SUSE:Linux Enterprise Module for Development Tools 15 SP3
From an advisory covering 4 CVEs
before 1.18.3-150000.1.20.1
1.18.3-150000.1.20.1
go1.18
SUSE:Linux Enterprise Module for Development Tools 15 SP4
From an advisory covering 4 CVEs
before 1.18.3-150000.1.20.1
1.18.3-150000.1.20.1
go1.18
openSUSE:Leap 15.3
From an advisory covering 4 CVEs
before 1.18.3-150000.1.20.1
1.18.3-150000.1.20.1
go1.18
openSUSE:Leap 15.4
From an advisory covering 4 CVEs
before 1.18.3-150000.1.20.1
1.18.3-150000.1.20.1
go1.18-openssl
SUSE:Linux Enterprise Module for Development Tools 15 SP4
From an advisory covering 28 CVEs
before 1.18.10.1-150000.1.9.1
1.18.10.1-150000.1.9.1
go1.18-openssl
SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS
From an advisory covering 28 CVEs
before 1.18.10.1-150000.1.9.1
1.18.10.1-150000.1.9.1
go1.18-openssl
SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS
From an advisory covering 28 CVEs
before 1.18.10.1-150000.1.9.1
1.18.10.1-150000.1.9.1
go1.18-openssl
SUSE:Linux Enterprise Real Time 15 SP3
From an advisory covering 28 CVEs
before 1.18.10.1-150000.1.9.1
1.18.10.1-150000.1.9.1
go1.18-openssl
SUSE:Linux Enterprise Server 15 SP3-LTSS
From an advisory covering 28 CVEs
before 1.18.10.1-150000.1.9.1
1.18.10.1-150000.1.9.1
go1.18-openssl
SUSE:Linux Enterprise Server for SAP Applications 15 SP3
From an advisory covering 28 CVEs
before 1.18.10.1-150000.1.9.1
1.18.10.1-150000.1.9.1
go1.18-openssl
SUSE:Enterprise Storage 7.1
From an advisory covering 28 CVEs
before 1.18.10.1-150000.1.9.1
1.18.10.1-150000.1.9.1
go1.18-openssl
openSUSE:Leap 15.4
From an advisory covering 28 CVEs
before 1.18.10.1-150000.1.9.1
1.18.10.1-150000.1.9.1
go1.18-openssl
openSUSE:Leap 15.5
From an advisory covering 28 CVEs
before 1.18.10.1-150000.1.9.1
1.18.10.1-150000.1.9.1
golang-1.8
Ubuntu:18.04:LTS
All versions, plus listed versions
1.8.3-2ubuntu11.8.3-2ubuntu1.18.04.1
None known
golang-1.17
Ubuntu:22.04:LTS
All versions, plus listed versions
1.17-1ubuntu21.17.3-1ubuntu11.17.3-1ubuntu21.17.13-3ubuntu11.17.13-3ubuntu1.21.17.13-3ubuntu1.3
None known
go1.17
openSUSE:Tumbleweed
From an advisory covering 4 CVEs
before 1.17.11-1.1
1.17.11-1.1
go1.18
openSUSE:Tumbleweed
From an advisory covering 4 CVEs
before 1.18.3-1.1
1.18.3-1.1

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2022-30634 is a high vulnerability (CVSS 7.5) in Go Standard Library Crypto/rand, published June 7, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.28%, the 83rd percentile. Fixed in go 1.18.4-r0.

References

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