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4 vulnerabilities found for syscall by Go standard library
CVE-2025-0913 (GCVE-0-2025-0913)
Vulnerability from nvd – Published: 2025-06-11 17:17 – Updated: 2025-06-11 17:37
VLAI
Title
Inconsistent handling of O_CREATE|O_EXCL on Unix and Windows in os in syscall
Summary
os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | syscall |
Affected:
0 , < 1.23.10
(semver)
Affected: 1.24.0-0 , < 1.24.4 (semver) |
|
| Go standard library | os |
Affected:
0 , < 1.23.10
(semver)
Affected: 1.24.0-0 , < 1.24.4 (semver) |
Credits
{
"containers": {
"adp": [
{
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"attackVector": "LOCAL",
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"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
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"scope": "UNCHANGED",
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"version": "3.1"
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
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"title": "CISA ADP Vulnrichment"
}
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"cna": {
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{
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"defaultStatus": "unaffected",
"packageName": "syscall",
"platforms": [
"windows"
],
"product": "syscall",
"programRoutines": [
{
"name": "Open"
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"versions": [
{
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"status": "affected",
"version": "0",
"versionType": "semver"
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{
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"version": "1.24.0-0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "os",
"platforms": [
"windows"
],
"product": "os",
"programRoutines": [
{
"name": "OpenFile"
},
{
"name": "Root.OpenFile"
},
{
"name": "Chdir"
},
{
"name": "Chmod"
},
{
"name": "Chown"
},
{
"name": "CopyFS"
},
{
"name": "Create"
},
{
"name": "CreateTemp"
},
{
"name": "File.ReadDir"
},
{
"name": "File.Readdir"
},
{
"name": "File.Readdirnames"
},
{
"name": "Getwd"
},
{
"name": "Lchown"
},
{
"name": "Link"
},
{
"name": "Lstat"
},
{
"name": "Mkdir"
},
{
"name": "MkdirAll"
},
{
"name": "MkdirTemp"
},
{
"name": "NewFile"
},
{
"name": "Open"
},
{
"name": "OpenInRoot"
},
{
"name": "OpenRoot"
},
{
"name": "Pipe"
},
{
"name": "ReadDir"
},
{
"name": "ReadFile"
},
{
"name": "Remove"
},
{
"name": "RemoveAll"
},
{
"name": "Rename"
},
{
"name": "Root.Create"
},
{
"name": "Root.Lstat"
},
{
"name": "Root.Mkdir"
},
{
"name": "Root.Open"
},
{
"name": "Root.OpenRoot"
},
{
"name": "Root.Remove"
},
{
"name": "Root.Stat"
},
{
"name": "StartProcess"
},
{
"name": "Stat"
},
{
"name": "Symlink"
},
{
"name": "Truncate"
},
{
"name": "WriteFile"
},
{
"name": "dirFS.Open"
},
{
"name": "dirFS.ReadDir"
},
{
"name": "dirFS.ReadFile"
},
{
"name": "dirFS.Stat"
},
{
"name": "rootFS.Open"
},
{
"name": "rootFS.ReadDir"
},
{
"name": "rootFS.ReadFile"
},
{
"name": "rootFS.Stat"
},
{
"name": "unixDirent.Info"
}
],
"vendor": "Go standard library",
"versions": [
{
"lessThan": "1.23.10",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "1.24.4",
"status": "affected",
"version": "1.24.0-0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Junyoung Park and Dong-uk Kim of KAIST Hacking Lab"
}
],
"descriptions": [
{
"lang": "en",
"value": "os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en"
}
]
}
],
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"dateUpdated": "2025-06-11T17:17:25.606Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/cl/672396"
},
{
"url": "https://go.dev/issue/73702"
},
{
"url": "https://groups.google.com/g/golang-announce/c/ufZ8WpEsA3A"
},
{
"url": "https://pkg.go.dev/vuln/GO-2025-3750"
}
],
"title": "Inconsistent handling of O_CREATE|O_EXCL on Unix and Windows in os in syscall"
}
},
"cveMetadata": {
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"assignerShortName": "Go",
"cveId": "CVE-2025-0913",
"datePublished": "2025-06-11T17:17:25.606Z",
"dateReserved": "2025-01-30T21:52:33.447Z",
"dateUpdated": "2025-06-11T17:37:52.111Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
CVE-2022-41716 (GCVE-0-2022-41716)
Vulnerability from nvd – Published: 2022-11-02 15:28 – Updated: 2024-10-30 13:59
VLAI
Title
Unsanitized NUL in environment variables on Windows in syscall and os/exec
Summary
Due to unsanitized NUL values, attackers may be able to maliciously set environment variables on Windows. In syscall.StartProcess and os/exec.Cmd, invalid environment variable values containing NUL values are not properly checked for. A malicious environment variable value can exploit this behavior to set a value for a different environment variable. For example, the environment variable string "A=B\x00C=D" sets the variables "A=B" and "C=D".
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-158 - Improper Neutralization of Null Byte or NUL Character
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | syscall |
Affected:
0 , < 1.18.8
(semver)
Affected: 1.19.0-0 , < 1.19.3 (semver) |
|
| Go standard library | os/exec |
Affected:
0 , < 1.18.8
(semver)
Affected: 1.19.0-0 , < 1.19.3 (semver) |
Credits
{
"containers": {
"adp": [
{
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"dateUpdated": "2024-08-03T12:49:43.904Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"url": "https://security.netapp.com/advisory/ntap-20230120-0007/"
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"url": "https://go.dev/issue/56284"
},
{
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],
"url": "https://go.dev/cl/446916"
},
{
"tags": [
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{
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"url": "https://pkg.go.dev/vuln/GO-2022-1095"
}
],
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},
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"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
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"version": "3.1"
}
},
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{
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"timestamp": "2024-08-01T14:02:04.861393Z",
"version": "2.0.3"
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}
],
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
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"name": "StartProcess"
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"lessThan": "1.18.8",
"status": "affected",
"version": "0",
"versionType": "semver"
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{
"lessThan": "1.19.3",
"status": "affected",
"version": "1.19.0-0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "os/exec",
"platforms": [
"windows"
],
"product": "os/exec",
"programRoutines": [
{
"name": "Cmd.environ"
},
{
"name": "dedupEnv"
},
{
"name": "dedupEnvCase"
},
{
"name": "Cmd.CombinedOutput"
},
{
"name": "Cmd.Environ"
},
{
"name": "Cmd.Output"
},
{
"name": "Cmd.Run"
},
{
"name": "Cmd.Start"
}
],
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"status": "affected",
"version": "0",
"versionType": "semver"
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"status": "affected",
"version": "1.19.0-0",
"versionType": "semver"
}
]
}
],
"credits": [
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"lang": "en",
"value": "RyotaK (https://twitter.com/ryotkak)"
}
],
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{
"lang": "en",
"value": "Due to unsanitized NUL values, attackers may be able to maliciously set environment variables on Windows. In syscall.StartProcess and os/exec.Cmd, invalid environment variable values containing NUL values are not properly checked for. A malicious environment variable value can exploit this behavior to set a value for a different environment variable. For example, the environment variable string \"A=B\\x00C=D\" sets the variables \"A=B\" and \"C=D\"."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-158: Improper Neutralization of Null Byte or NUL Character",
"lang": "en"
}
]
}
],
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"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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"url": "https://go.dev/cl/446916"
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},
{
"url": "https://pkg.go.dev/vuln/GO-2022-1095"
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],
"title": "Unsanitized NUL in environment variables on Windows in syscall and os/exec"
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CVE-2025-0913 (GCVE-0-2025-0913)
Vulnerability from cvelistv5 – Published: 2025-06-11 17:17 – Updated: 2025-06-11 17:37
VLAI
Title
Inconsistent handling of O_CREATE|O_EXCL on Unix and Windows in os in syscall
Summary
os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | syscall |
Affected:
0 , < 1.23.10
(semver)
Affected: 1.24.0-0 , < 1.24.4 (semver) |
|
| Go standard library | os |
Affected:
0 , < 1.23.10
(semver)
Affected: 1.24.0-0 , < 1.24.4 (semver) |
Credits
{
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"attackVector": "LOCAL",
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"version": "3.1"
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"version": "2.0.3"
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
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{
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"defaultStatus": "unaffected",
"packageName": "syscall",
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"name": "Open"
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"versionType": "semver"
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{
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"status": "affected",
"version": "1.24.0-0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "os",
"platforms": [
"windows"
],
"product": "os",
"programRoutines": [
{
"name": "OpenFile"
},
{
"name": "Root.OpenFile"
},
{
"name": "Chdir"
},
{
"name": "Chmod"
},
{
"name": "Chown"
},
{
"name": "CopyFS"
},
{
"name": "Create"
},
{
"name": "CreateTemp"
},
{
"name": "File.ReadDir"
},
{
"name": "File.Readdir"
},
{
"name": "File.Readdirnames"
},
{
"name": "Getwd"
},
{
"name": "Lchown"
},
{
"name": "Link"
},
{
"name": "Lstat"
},
{
"name": "Mkdir"
},
{
"name": "MkdirAll"
},
{
"name": "MkdirTemp"
},
{
"name": "NewFile"
},
{
"name": "Open"
},
{
"name": "OpenInRoot"
},
{
"name": "OpenRoot"
},
{
"name": "Pipe"
},
{
"name": "ReadDir"
},
{
"name": "ReadFile"
},
{
"name": "Remove"
},
{
"name": "RemoveAll"
},
{
"name": "Rename"
},
{
"name": "Root.Create"
},
{
"name": "Root.Lstat"
},
{
"name": "Root.Mkdir"
},
{
"name": "Root.Open"
},
{
"name": "Root.OpenRoot"
},
{
"name": "Root.Remove"
},
{
"name": "Root.Stat"
},
{
"name": "StartProcess"
},
{
"name": "Stat"
},
{
"name": "Symlink"
},
{
"name": "Truncate"
},
{
"name": "WriteFile"
},
{
"name": "dirFS.Open"
},
{
"name": "dirFS.ReadDir"
},
{
"name": "dirFS.ReadFile"
},
{
"name": "dirFS.Stat"
},
{
"name": "rootFS.Open"
},
{
"name": "rootFS.ReadDir"
},
{
"name": "rootFS.ReadFile"
},
{
"name": "rootFS.Stat"
},
{
"name": "unixDirent.Info"
}
],
"vendor": "Go standard library",
"versions": [
{
"lessThan": "1.23.10",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "1.24.4",
"status": "affected",
"version": "1.24.0-0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Junyoung Park and Dong-uk Kim of KAIST Hacking Lab"
}
],
"descriptions": [
{
"lang": "en",
"value": "os.OpenFile(path, os.O_CREATE|O_EXCL) behaved differently on Unix and Windows systems when the target path was a dangling symlink. On Unix systems, OpenFile with O_CREATE and O_EXCL flags never follows symlinks. On Windows, when the target path was a symlink to a nonexistent location, OpenFile would create a file in that location. OpenFile now always returns an error when the O_CREATE and O_EXCL flags are both set and the target path is a symlink."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-59: Improper Link Resolution Before File Access (\u0027Link Following\u0027)",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-06-11T17:17:25.606Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/cl/672396"
},
{
"url": "https://go.dev/issue/73702"
},
{
"url": "https://groups.google.com/g/golang-announce/c/ufZ8WpEsA3A"
},
{
"url": "https://pkg.go.dev/vuln/GO-2025-3750"
}
],
"title": "Inconsistent handling of O_CREATE|O_EXCL on Unix and Windows in os in syscall"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2025-0913",
"datePublished": "2025-06-11T17:17:25.606Z",
"dateReserved": "2025-01-30T21:52:33.447Z",
"dateUpdated": "2025-06-11T17:37:52.111Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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}
CVE-2022-41716 (GCVE-0-2022-41716)
Vulnerability from cvelistv5 – Published: 2022-11-02 15:28 – Updated: 2024-10-30 13:59
VLAI
Title
Unsanitized NUL in environment variables on Windows in syscall and os/exec
Summary
Due to unsanitized NUL values, attackers may be able to maliciously set environment variables on Windows. In syscall.StartProcess and os/exec.Cmd, invalid environment variable values containing NUL values are not properly checked for. A malicious environment variable value can exploit this behavior to set a value for a different environment variable. For example, the environment variable string "A=B\x00C=D" sets the variables "A=B" and "C=D".
Severity
6.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-158 - Improper Neutralization of Null Byte or NUL Character
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | syscall |
Affected:
0 , < 1.18.8
(semver)
Affected: 1.19.0-0 , < 1.19.3 (semver) |
|
| Go standard library | os/exec |
Affected:
0 , < 1.18.8
(semver)
Affected: 1.19.0-0 , < 1.19.3 (semver) |
Credits
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