{"id":"CVE-2021-29499","aliases":["DEBIAN-CVE-2021-29499","EUVD-2021-0940","GHSA-4gh8-x3vv-phhg","GO-2022-0912","UBUNTU-CVE-2021-29499"],"status":"published","title":"Predictable SIF UUID Identifiers","description":"SIF is an open source implementation of the Singularity Container Image Format. The `siftool new` command and func siftool.New() produce predictable UUID identifiers due to insecure randomness in the version of the `github.com/satori/go.uuid` module used as a dependency. A patch is available in version \u003e= v1.2.3 of the module. Users are encouraged to upgrade. As a workaround, users passing CreateInfo struct should ensure the `ID` field is generated using a version of `github.com/satori/go.uuid` that is not vulnerable to this issue.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00958,"percentile":0.61719,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-330","CWE-340"],"published":"2021-05-07T20:50:09Z","modified":"2026-10-23T18:03:09Z","fixes":[{"ecosystem":"Go","package":"github.com/sylabs/sif","fixed_in":["1.2.3"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"golang-github-sylabs-sif","fixed_in":["2.3.1-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"golang-github-sylabs-sif","fixed_in":["2.3.1-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"golang-github-sylabs-sif","fixed_in":["2.3.1-2"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/sylabs/sif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.3"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"golang-github-sylabs-sif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.1-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"golang-github-sylabs-sif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.1-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"golang-github-sylabs-sif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3.1-2"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/sylabs/sif","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.2.3"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/sylabs/sif","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.2.3"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"singularity-container","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.1-2","2.3.2-1","2.4.1-1","2.4.2-2","2.4.2-3","2.4.2-4","2.4.2-4ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"golang-github-sylabs-sif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.9-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"golang-github-sylabs-sif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.9-2.1","1.0.9-2.1build1","1.0.9-2.1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"golang-github-sylabs-sif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.8.3-2build1","2.8.3-2ubuntu0.24.04.1","2.8.3-2ubuntu0.24.04.2","2.8.3-2ubuntu0.24.04.3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"singularity-container","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.1+ds2-1","4.1.1+ds2-1build1","4.1.1+ds2-1ubuntu0.1","4.1.1+ds2-1ubuntu0.2","4.1.1+ds2-1ubuntu0.2+esm1","4.1.1+ds2-1ubuntu0.3","4.1.1+ds2-1ubuntu0.3+esm1","4.1.1+ds2-1ubuntu0.3+esm2"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"golang-github-sylabs-sif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.21.0-1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"singularity-container","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.5+ds4-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"golang-github-sylabs-sif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.23.0-1","2.24.1-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"singularity-container","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.1.5+ds4-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:26.04:LTS","package":"golang-github-sylabs-sif","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.21.0-1","2.21.0-1build1","2.23.0-1","2.23.0-1ubuntu0.26.04.1~esm1"]}],"products":[{"vendor":"sylabs","product":"sif"},{"vendor":"sylabs","product":"singularity_image_format"}],"references":[{"url":"https://github.com/sylabs/sif/security/advisories/GHSA-4gh8-x3vv-phhg","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Third Party Advisory","evidence","web","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-29499","tags":["advisory"]},{"url":"https://github.com/satori/go.uuid/issues/73","tags":["web"]},{"url":"https://github.com/sylabs/sif/commit/193962882122abf85ff5f5bcc86404933e71c07d","tags":["web","fix","report"]},{"url":"https://github.com/advisories/GHSA-4gh8-x3vv-phhg"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-29499","tags":["advisory"]},{"url":"https://github.com/sylabs/sif","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2021-29499","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-29499","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-29499","title":"Predictable SIF UUID Identifiers","description":"SIF is an open source implementation of the Singularity Container Image Format. The `siftool new` command and func siftool.New() produce predictable UUID identifiers due to insecure randomness in the version of the `github.com/satori/go.uuid` module used as a dependency. A patch is available in version \u003e= v1.2.3 of the module. Users are encouraged to upgrade. As a workaround, users passing CreateInfo struct should ensure the `ID` field is generated using a version of `github.com/satori/go.uuid` that is not vulnerable to this issue.","status":"published","published":"2021-05-07T20:50:09Z","modified":"2024-08-03T22:11:05.383Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-330"],"updated_at":"2026-11-02T14:33:06.658806Z"}],"euvd":[{"id":"EUVD-2021-0940","description":"SIF is an open source implementation of the Singularity Container Image Format. The `siftool new` command and func siftool.New() produce predictable UUID identifiers due to insecure randomness in the version of the `github.com/satori/go.uuid` module used as a dependency. A patch is available in version \u003e= v1.2.3 of the module. Users are encouraged to upgrade. As a workaround, users passing CreateInfo struct should ensure the `ID` field is generated using a version of `github.com/satori/go.uuid` that is not vulnerable to this issue.","status":"published","published":"2021-05-07T20:50:09Z","modified":"2024-08-03T22:11:05Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T03:24:44.540278Z"}],"ghsa":[{"id":"GHSA-4gh8-x3vv-phhg","title":"Predictable SIF UUID Identifiers in github.com/sylabs/sif","description":"### Impact\n\nThe `siftool new` command and [func siftool.New()](https://pkg.go.dev/github.com/sylabs/sif/pkg/siftool#New) produce predictable UUID identifiers due to insecure randomness in the version of the `github.com/satori/go.uuid` module used as a dependency.\n\n### Patches\n\nA patch is available in version \u003e= v1.2.3 of the module. Users are encouraged to upgrade.\n\nThe patch is commit https://github.com/sylabs/sif/commit/193962882122abf85ff5f5bcc86404933e71c07d\n\n### Workarounds\nUsers passing [CreateInfo struct](https://pkg.go.dev/github.com/sylabs/sif/pkg/sif#CreateInfo) should ensure the `ID` field is generated using a version of `github.com/satori/go.uuid` that is not vulnerable to this issue. Unfortunately, the latest tagged release is vulnerable to this issue. One way to obtain a non-vulnerable version is:\n\n```\ngo get github.com/satori/go.uuid@75cca531ea763666bc46e531da3b4c3b95f64557\n```\n\n### References\n* https://github.com/satori/go.uuid/issues/73\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [github.com/sylabs/sif](https://github.com/sylabs/sif/issues/new)\n* Email us at [security@sylabs.io](mailto:security@sylabs.io)\n","status":"published","published":"2021-05-18T18:30:38Z","modified":"2023-02-03T05:00:50Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-330","CWE-340"],"updated_at":"2026-11-02T14:36:41.247728Z"}],"nvd":[{"id":"CVE-2021-29499","description":"SIF is an open source implementation of the Singularity Container Image Format. The `siftool new` command and func siftool.New() produce predictable UUID identifiers due to insecure randomness in the version of the `github.com/satori/go.uuid` module used as a dependency. A patch is available in version \u003e= v1.2.3 of the module. Users are encouraged to upgrade. As a workaround, users passing CreateInfo struct should ensure the `ID` field is generated using a version of `github.com/satori/go.uuid` that is not vulnerable to this issue.","status":"published","published":"2021-05-07T21:15:07.377Z","modified":"2026-06-17T03:47:46.68Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-330"],"updated_at":"2026-11-02T14:06:52.81233Z"}],"osv":[{"id":"CVE-2021-29499","description":"SIF is an open source implementation of the Singularity Container Image Format. The `siftool new` command and func siftool.New() produce predictable UUID identifiers due to insecure randomness in the version of the `github.com/satori/go.uuid` module used as a dependency. A patch is available in version \u003e= v1.2.3 of the module. Users are encouraged to upgrade. As a workaround, users passing CreateInfo struct should ensure the `ID` field is generated using a version of `github.com/satori/go.uuid` that is not vulnerable to this issue.","status":"published","published":"2021-05-07T21:15:07.377Z","modified":"2026-10-20T10:53:43.758744563Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:19.129331Z"},{"id":"DEBIAN-CVE-2021-29499","description":"SIF is an open source implementation of the Singularity Container Image Format. The `siftool new` command and func siftool.New() produce predictable UUID identifiers due to insecure randomness in the version of the `github.com/satori/go.uuid` module used as a dependency. A patch is available in version \u003e= v1.2.3 of the module. Users are encouraged to upgrade. As a workaround, users passing CreateInfo struct should ensure the `ID` field is generated using a version of `github.com/satori/go.uuid` that is not vulnerable to this issue.","status":"published","published":"2021-05-07T21:15:07.377Z","modified":"2026-10-23T18:03:09.108690525Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:34.94143Z"},{"id":"GHSA-4gh8-x3vv-phhg","title":"Predictable SIF UUID Identifiers in github.com/sylabs/sif","description":"### Impact\n\nThe `siftool new` command and [func siftool.New()](https://pkg.go.dev/github.com/sylabs/sif/pkg/siftool#New) produce predictable UUID identifiers due to insecure randomness in the version of the `github.com/satori/go.uuid` module used as a dependency.\n\n### Patches\n\nA patch is available in version \u003e= v1.2.3 of the module. Users are encouraged to upgrade.\n\nThe patch is commit https://github.com/sylabs/sif/commit/193962882122abf85ff5f5bcc86404933e71c07d\n\n### Workarounds\nUsers passing [CreateInfo struct](https://pkg.go.dev/github.com/sylabs/sif/pkg/sif#CreateInfo) should ensure the `ID` field is generated using a version of `github.com/satori/go.uuid` that is not vulnerable to this issue. Unfortunately, the latest tagged release is vulnerable to this issue. One way to obtain a non-vulnerable version is:\n\n```\ngo get github.com/satori/go.uuid@75cca531ea763666bc46e531da3b4c3b95f64557\n```\n\n### References\n* https://github.com/satori/go.uuid/issues/73\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [github.com/sylabs/sif](https://github.com/sylabs/sif/issues/new)\n* Email us at [security@sylabs.io](mailto:security@sylabs.io)\n","status":"published","published":"2021-05-18T18:30:38Z","modified":"2026-07-08T06:28:43.589924945Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-330","CWE-340"],"updated_at":"2026-11-02T15:46:37.148947Z"},{"id":"UBUNTU-CVE-2021-29499","description":"SIF is an open source implementation of the Singularity Container Image Format. The `siftool new` command and func siftool.New() produce predictable UUID identifiers due to insecure randomness in the version of the `github.com/satori/go.uuid` module used as a dependency. A patch is available in version \u003e= v1.2.3 of the module. Users are encouraged to upgrade. As a workaround, users passing CreateInfo struct should ensure the `ID` field is generated using a version of `github.com/satori/go.uuid` that is not vulnerable to this issue.","status":"published","published":"2021-05-07T21:15:00Z","modified":"2026-10-17T12:55:45.76809044Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:54:26.779273Z"},{"id":"GO-2022-0912","title":"Predictable SIF UUID Identifiers in github.com/sylabs/sif","description":"Predictable SIF UUID Identifiers in github.com/sylabs/sif","status":"published","published":"2024-08-21T15:29:08Z","modified":"2026-03-03T04:51:03.214114Z","updated_at":"2026-11-02T15:47:00.918515Z"}]}}