{"id":"CVE-2017-1000353","kind":"vulnerability","aliases":["CVE-2017-1000353"],"related":[],"title":"Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an unauthenticated remote code…","description":"Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an unauthenticated remote code execution. An unauthenticated remote code execution vulnerability allowed attackers to transfer a serialized Java `SignedObject` object to the Jenkins CLI, that would be deserialized using a new `ObjectInputStream`, bypassing the existing blacklist-based protection mechanism. We're fixing this issue by adding `SignedObject` to the blacklist. We're also backporting the new HTTP CLI protocol from Jenkins 2.54 to LTS 2.46.2, and deprecating the remoting-based (i.e. Java serialization) CLI protocol, disabling it by default.","summary":"Jenkins has a remote code execution flaw in its remoting-based CLI, where a crafted serialized Java SignedObject bypasses the blocklist that normally blocks dangerous deserialization. An attacker who can reach the CLI port can run code on the Jenkins controller, and CISA lists it as actively exploited.","severity":"critical","cvss":9.8,"epss":null,"exploited":true,"exploited_at":"2025-10-02T00:00:00+00:00","products":[{"name":"Jenkins Jenkins","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"jenkins","fixed":[],"affected":"<= 2.56","ecosystem":"vendor"},{"name":"jenkins","fixed":[],"affected":"<= 2.46.1","ecosystem":"vendor"},{"name":"oracle communications cloud native core automated test suite","fixed":[],"affected":"= 1.9.0","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["exploited","jenkins","runtime","self-hosted"],"not_affected_if":["unknown"],"how_to_check":null,"fix":"Upgrade Jenkins to a release that includes the fix for CVE-2017-1000353, or apply the vendor mitigations; the sources do not name the fixed version.\nCISA says to discontinue use if mitigations are unavailable.","status":"open","published_at":"2018-01-29T17:29:00+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:44:46+00:00","updated_at":"2026-10-23T23:44:51+00:00","category":"runtime","confidence":0.6,"triage":{"at":"2026-10-23T20:44:46Z","model":"claude-haiku-5-5","output":{"fix":"Upgrade Jenkins to a release that includes the fix for CVE-2017-1000353, or apply the vendor mitigations; the sources do not name the fixed version.\nCISA says to discontinue use if mitigations are unavailable.","reach":"network","summary":"Jenkins has a remote code execution flaw in its remoting-based CLI, where a crafted serialized Java SignedObject bypasses the blocklist that normally blocks dangerous deserialization. An attacker who can reach the CLI port can run code on the Jenkins controller, and CISA lists it as actively exploited.","category":"runtime","who_cares":["jenkins","self-hosted"],"confidence":0.6,"needs_auth":"unknown","worst_case":"Attacker runs arbitrary code on the Jenkins server","analyst_note":"Find the fixed Jenkins version and the exact CLI exposure conditions in the Jenkins security advisory for CVE-2017-1000353 (jenkins.io/security).","how_to_check":"unknown","needs_analyst":true,"not_affected_if":["unknown"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000465,"input_tokens":2585,"output_tokens":413,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-1000353':22A,25A '-2017':21A,24A '2.46.1':9A,101C '2.46.2':173C '2.54':170C '2.56':3A,95C 'activ':91B 'add':154C 'allow':119C 'also':161C 'attack':72B,120C 'automated':35A 'backport':162C 'base':55B,145C,179C 'blacklist':144C,158C 'blacklist-bas':143C 'block':68B 'blocklist':65B 'bypass':63B,140C 'cisa':87B 'cli':56B,77B,131C,166C,183C 'cloud':32A 'code':19A,48B,81B,111C,116C 'communications':31A 'control':85B 'core':34A 'craft':59B 'cve':20A,23A 'danger':69B 'default':188C 'deprec':175C 'deseri':70B,135C 'disabl':185C 'earlier':5A,12A,97C,104C 'execut':49B,112C,117C 'exist':142C 'exploit':38B,92B 'fix':150C 'flaw':50B 'host':43B 'http':165C 'i.e':180C 'issu':152C 'java':61B,125C,181C 'jenkin':1A,39B,44B,84B,93C,130C,169C 'jenkins':26A,27A,28A,29A 'list':88B 'lts':10A,102C,172C 'mechan':147C 'native':33A 'new':138C,164C 'normal':67B 'object':127C 'objectinputstream':139C 'oracle':30A 'port':78B 'protect':146C 'protocol':167C,184C 're':149C,160C 'reach':75B 'remot':18A,47B,54B,110C,115C,178C 'remoting-bas':53B,177C 'run':80B 'runtim':40B 'self':42B 'self-host':41B 'serial':60B,124C,182C 'signedobject':62B,126C,155C 'suite':37A 'test':36A 'transfer':122C 'unauthent':17A,109C,114C 'use':136C 'version':2A,94C 'vulner':14A,106C,118C 'well':7A,99C 'would':133C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2018-01-29T17:29:00+00:00","kev":{"dateAdded":"2025-10-02","dueDate":"2025-10-23","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2017-1000353","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2017-1000353","severity":null,"published_at":"2025-10-02T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T10:39:04+00:00","note":null},{"source":"nvd","external_id":"CVE-2017-1000353","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-1000353","severity":null,"published_at":"2018-01-29T17:29:00+00:00","modified_at":"2026-06-17T00:59:00+00:00","first_seen_at":"2026-10-23T23:44:51+00:00","fetched_at":"2026-10-23T23:44:51+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}