{"answers":{"affected":"6 open source packages ship an affected version, including github.com/binance-chain/tss-lib and github.com/bnb-chain/tss-lib. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-26557 in the wild and no public exploit code.","fix":"Upgrade github.com/binance-chain/tss-lib to 1.3.6-0.20230324145555-bb6fb30bd3eb or later.","what":"CVE-2023-26557 is a high-severity vulnerability in n/a, published on 21 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-26557 and fix it if it is affected.\n\nWhat it is: CVE-2023-26557 is a high-severity vulnerability in n/a, published on 21 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-26557 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- github.com/binance-chain/tss-lib (Go): affected all versions; no fix listed\n- github.com/binance-chain/tss-lib (Go): affected all versions; fixed in 1.3.6-0.20230324145555-bb6fb30bd3eb\n- github.com/binance-chain/tss-lib (Go): affected all versions; fixed in 1.3.6-0.20230324145555-bb6fb30bd3eb\n- github.com/bnb-chain/tss-lib (Go): affected all versions; fixed in 1.3.6-0.20230324145555-bb6fb30bd3eb\n- github.com/bnb-chain/tss-lib (Go): affected all versions; fixed in 1.3.6-0.20230324145555-bb6fb30bd3eb\n- github.com/bnb-chain/tss-lib (Go): affected all versions; fixed in 1.3.6-0.20230324145555-bb6fb30bd3eb\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2023-26557/ (Markdown: https://insights.sbomify.com/CVE-2023-26557/index.md)","id":"CVE-2023-26557","markdown":"https://insights.sbomify.com/CVE-2023-26557/index.md","name":"CVE-2023-26557","record":{"aliases":["GHSA-mjqv-xhgm-gx8c","GO-2023-1733"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Go cryptographic library","requires_auth":"none","summary":"Attackers can recover private key lambda values via timing side-channels in tss-lib due to non-constant-time Go big.Int operations.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"tss-lib","vendor":"iofinnet"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-203","name":"Observable Discrepancy"}],"description":"io.finnet tss-lib before 2.0.0 can leak the lambda value of a private key via a timing side-channel attack because it relies on Go big.Int, which is not constant time for Cmp, modular exponentiation, or modular inverse. An example leak is in crypto/paillier/paillier.go. (bnb-chain/tss-lib and thorchain/tss are also affected.)","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"IO FinNet tss-lib vulnerable to timing attack from non-constant time scalar arithmetic","id":"CVE-2023-26557","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"information_disclosure","year":"2023"},"n_packages":6,"n_references":4,"next":{"headline":"Path traversal in n/a","id":"CVE-2023-26559"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/binance-chain/tss-lib","purl":"pkg:golang/github.com/binance-chain/tss-lib","source":"GO-2023-1733"},{"ecosystem":"Go","fixed":["1.3.6-0.20230324145555-bb6fb30bd3eb"],"introduced":["0"],"last_affected":[],"package":"github.com/binance-chain/tss-lib","purl":null,"source":"GHSA-mjqv-xhgm-gx8c"},{"ecosystem":"Go","fixed":["1.3.6-0.20230324145555-bb6fb30bd3eb"],"introduced":["0"],"last_affected":[],"package":"github.com/binance-chain/tss-lib","purl":"pkg:golang/github.com/binance-chain/tss-lib","source":"GHSA-mjqv-xhgm-gx8c"},{"ecosystem":"Go","fixed":["1.3.6-0.20230324145555-bb6fb30bd3eb"],"introduced":["0"],"last_affected":[],"package":"github.com/bnb-chain/tss-lib","purl":null,"source":"GHSA-mjqv-xhgm-gx8c"},{"ecosystem":"Go","fixed":["1.3.6-0.20230324145555-bb6fb30bd3eb"],"introduced":["0"],"last_affected":[],"package":"github.com/bnb-chain/tss-lib","purl":"pkg:golang/github.com/bnb-chain/tss-lib","source":"GHSA-mjqv-xhgm-gx8c"},{"ecosystem":"Go","fixed":["1.3.6-0.20230324145555-bb6fb30bd3eb"],"introduced":["0"],"last_affected":[],"package":"github.com/bnb-chain/tss-lib","purl":"pkg:golang/github.com/bnb-chain/tss-lib","source":"GO-2023-1733"}],"prev":{"headline":"IO FinNet tss-lib vulnerable to timing attack from non-constant time scalar multiplication","id":"CVE-2023-26556"},"products":["n/a"],"published":"2023-04-21","related":[{"cvss_score":9.1,"headline":"IO FinNet tss-lib vulnerable to timing attack from non-constant time scalar multiplication","id":"CVE-2023-26556","kev_date_added":null,"published":"2023-04-21"},{"cvss_score":6.8,"headline":"IO FinNet tss-lib vulnerable to replay attacks involving proofs","id":"CVE-2022-47930","kev_date_added":null,"published":"2023-04-21"},{"cvss_score":6.5,"headline":"Collision of hash values in github.com/bnb-chain/tss-lib","id":"CVE-2022-47931","kev_date_added":null,"published":"2022-12-22"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-02-05","vendors":["n/a"]},"summary":"Attackers can recover private key lambda values via timing side-channels in tss-lib due to non-constant-time Go big.Int operations.","url":"https://insights.sbomify.com/CVE-2023-26557/"}